how to write numbers in a research paper

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Writing numbers When to use words and when to use numerals

It can be difficult to know how to write numbers in academic writing (e.g. five or 5 , 1 million or 1,000,000 ). This section gives some guidelines on when to use words to write numbers, and when to use numerals . There are also some exceptions to the rule which are considered, i.e. times when you might expect to use words but should instead use numerals. There is also a checklist at the end, that you can use to check the use of numbers in your own writing.

When to use words

In general, words should be used for zero to ten , and numerals used from 11 onwards. The same rule should be applied to ordinal numbers, i.e. use words for first, second up to tenth, and numbers plus 'th' (or 'st') from 11th onwards. However, it is always best to check what the accepted practice is at your university (or in your department/on your course), and remember that some common referencing systems have their own, different requirements, as follows.

• MLA . Use words if the number can be written using one or two words (e.g. three , twenty-seven ).
• APA . Use words for numbers zero to nine.
• Chicago . Use words for numbers zero to one hundred.

Before looking at when to use numerals (which is almost all other situations, see next), it is useful to look at important exceptions.

(1) When the number begins a sentence , you should use words , whatever the size of the number (though if possible, rewrite the sentence so the number is not at the beginning).

• Fifty respondents agreed with the statement.
• There were 50 respondents who agreed with the statement. [ rewritten sentence ]
• 50 respondents agreed with the statement.

(2) When expressing part of a very large round number , e.g. million, billion, you should use words for that large number part (it is common to use abbreviations m for million and bn billion ).

• The population of the earth is now in excess of 7 billion people.
• The population of the earth is now in excess of 7bn people.
• The population of the earth is now in excess of 7,000,000,000 people.
• The population of the UK is approximately 70 million.
• The population of the UK is approximately 70,000,000.

Conversely, numerals should be used rather than words, whatever the size of the number, when large and small numbers are combined , since this makes comparisons easier.

• There were 2 respondents in the first category, and 22 in the second.
• There were two respondents in the first category, and 22 in the second.

When to use numerals

Numerals are used for almost all other situations. These include the following.

• Measurements (e.g. 6 kg, 3 cm, 10 min, 2 hr, 3 days, 6 years, 5 decades )
• Currency (e.g. $10, £50, £60 billion )
• Statistical data , including survey data (e.g. A survey of participants revealed that 4 out of 5 students worked. )
• Mathematical functions (e.g. v 2 = u 2 + 2as )
• Decimals (e.g. 2.5, 4.54 )
• Percentages (e.g. 75% )
• Ratios (e.g. 3:1 )
• Percentiles/quartiles (e.g. the 95th percentile, the 1st quartile )
• Times (e.g. 12.30 a.m., 6 p.m., 16:00 )
• Dates (e.g. Wednesday 25 December 2019 )
• Scores/points on a scale (e.g. This item scored 5 on a 9-point scale )

Other important points

The following are a few other points to remember when using numbers.

• Consistency. You should be consistent in how you write numbers; for example, if write a figure like 7bn in one place, do not write a figure like 5 billion in another.
• Use of commas. When giving numerals of 1,000 or larger, use commas for each thousand, e.g. 5,500, 8,326,500 .
• Use of hyphens. When displaying a range, use a hyphen, with no space, e.g. 30%–50%
• Expressing fractions. Fractions can be written either as numerals e.g. 2/3 or words e.g. two-thirds . If using words, use a hyphen.

American Psychological Association (2019a) Numbers Expressed in Words . Available at: https://apastyle.apa.org/style-grammar-guidelines/numbers/words (Accessed: 26 December, 2019).

American Psychological Association (2019b) Numbers Expressed in Numerals . Available at: https://apastyle.apa.org/style-grammar-guidelines/numbers/numerals (Accessed: 26 December, 2019).

Harvard Wiki (2019) Numbers . Available at: https://wiki.harvard.edu/confluence/display/HSG/Numbers . (Accessed: 26 December, 2019).

University of Bristol (2015) Using numbers . Available at: http://www.bristol.ac.uk/arts/exercises/grammar/grammar_tutorial/page_33.htm (Accessed: 26 December, 2019).

University of New England (nd) Numbers in academic writing . Available at: https://aso-resources.une.edu.au/academic-writing/miscellaneous/numbers/ (Accessed: 26 December, 2019).

University of Oxford (2015) Style Guide . Available at: https://www.ox.ac.uk/sites/files/oxford/media_wysiwyg/University%20of%20Oxford%20Style%20Guide.pdf (Accessed: 26 December, 2019).

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Below is a checklist for using numbers in academic writing. Use it to check your writing, or as a peer to help.

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Author: Sheldon Smith    ‖    Last modified: 16 January 2022.

Sheldon Smith is the founder and editor of EAPFoundation.com. He has been teaching English for Academic Purposes since 2004. Find out more about him in the about section and connect with him on Twitter , Facebook and LinkedIn .

Compare & contrast essays examine the similarities of two or more objects, and the differences.

Cause & effect essays consider the reasons (or causes) for something, then discuss the results (or effects).

Discussion essays require you to examine both sides of a situation and to conclude by saying which side you favour.

Problem-solution essays are a sub-type of SPSE essays (Situation, Problem, Solution, Evaluation).

Transition signals are useful in achieving good cohesion and coherence in your writing.

Reporting verbs are used to link your in-text citations to the information cited.

Writing academically: Numbers

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“Quote” Author, Book

When using numbers in academic writing you need to decide if it’s more appropriate to use a numeral (e.g. 9) or to write the number in words (e.g. nine). It’s worth checking to see if your department has specific advice on this matter, because individual approaches do vary. In the absence of specific advice, here is some general guidance on the matter:

Basic numbers

• Numbers  up to nine  should always be written in  words,  anything higher than nine can be written in numerals. Alternatively, some guides suggest that if you can write the number in two words or fewer then use words rather than numerals. If you are going to take this approach then you should include a hyphen when writing numbers with two words, e.g. twenty-seven.
• For larger numbers, it is acceptable to use either numerals or words depending on context (e.g. a thousand people/1,000 people), but you should always use numerals in technical writing, e.g. 200,000 km. For less precise larger numbers, the written form is better (e.g. several thousand).

Measurements and decimals/fractions

• Use numerals for units of measurement or time, e.g. 500 km, 10 minutes.
• Always use numerals for decimals and fractions (e.g. 0.5 cm) unless the figures are vague (e.g. around half of the population).
• Units of measurement that modify a noun should be hyphenated, e.g. a 3-year-old child.

Percentages

• If you have expressed the number in words then follow the number by the word 'percent'. e.g. six percent.
• If you have expressed the number as a numeral then follow the number with the symbol '%'. e.g. 24%.

Dates, money and time

• Always use numerals for dates, e.g Monday 4 April, 2016.
• Use numerals for money (e.g. His pocket money was exactly £1.00 per week) unless the amounts are vague (e.g. He earned well over a million last year).
• Use numerals for indicating the precise time (e.g. 08:00), or words if the times indicated are vague (e.g. around eight o’clock). 

Combining numbers

• If you need to combine two numbers that run together then use words for the shorter number and numerals for the longer number, e.g. a tower of 1000 ten-pence pieces. 

Starting sentences with numbers

• Avoid starting a sentence with a numeral. Either write the number in words or rearrange your sentence. For example, “Three hundred and sixty-five days make one year” could become “There are 365 days in a year”. If you start a sentence with a year, write “The year” first e.g. “The year 1066 saw one of the most famous battles in English history”.
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Using Numbers in Scientific Manuscripts

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When should you spell out a number in a scientific paper, and when do you use a numeral? Here's how to follow conventions and be consistent.

Updated on January 8, 2013

Writing a scholarly manuscript often requires the use of numbers to express important information, particularly in the sciences. Although the use of numbers is largely straightforward, there are a few things to keep in mind. In this article, numeral refers specifically to a number as it is written in mathematics (e.g., 4).

Do not start a sentence with a numeral

When writing for publication, try to use spelled-out numbers at the beginning of a sentence in place of numerals. This distinction is not based on grammar, but rather the conventions of academic writing in English.

• " 15 samples were collected " should be written as " Fifteen samples were collected "
• At times, writing out the numeral at the beginning of the sentence would be particularly unwieldy. In such cases, it is preferable to rearrange the sentence such that the numeral is not placed at the beginning. For example, " 6579 patient charts were collected for analysis " could be altered to " Charts from 6579 patients were collected for analysis "
• Note that some chemical compounds include numerals, and these should not be written out, even at the beginning of a sentence: " 5 -hydroxytryptamine is a neurotransmitter derived from tryptophan. "

Be consistent in the use of numerals or spelled-out numbers

Other tips for number usage involve consistency within your manuscript. As shown above, each number can be written as a numeral or a word. Many authors choose to use numerals for large numbers (say, those over 10) but words for small numbers. Either form is typically fine, but it is best to be consistent with your choice.

• If " We collected a total of eight samples " is written in your Methods section, avoid writing " Samples from all 8 lakes were nearly identical in pH " in your Results. Either correct the first sentence to include a numeral ('8') or change the second to the spelled-out word 'eight.'
• In addition, try to avoid mixing numerals and spelled-out words within a single sentence. For example, we suggest changing " The zoo has two pandas, eight elephants, and 15 orangutans " to " The zoo has two pandas, eight elephants, and fifteen orangutans ."

Other tips for consistency with numerals

Here are two other ways to make sure that your numerals are consistent within your manuscript. Consistency in your formatting choices is one way to demonstrate your attention to detail. Always consult your target journal's style sheet to see what they prefer.

• When using numbers larger than 1000, be sure to format them all in the same way. For example, 156000 , 156,000 , and 156 000 are all acceptable, but use only one format in your document.
• Be consistent with the inclusion or omission of a leading zero before decimals (i.e., 0.05 or .05 , but not both). Also, do not mix the use of a decimal point (0.12) with a decimal comma (0,12). In the vast majority of cases, journals prefer the use of the decimal point.

We hope that this article provides some guidance for the use of numbers in your writing. If you have specific questions about the numbers in your text, write to us by email at [email protected] . As always, AJE wishes you the best of luck with your research and publication!

Ben Mudrak, PhD

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13.1 Formatting a Research Paper

Learning objectives.

• Identify the major components of a research paper written using American Psychological Association (APA) style.
• Apply general APA style and formatting conventions in a research paper.

In this chapter, you will learn how to use APA style , the documentation and formatting style followed by the American Psychological Association, as well as MLA style , from the Modern Language Association. There are a few major formatting styles used in academic texts, including AMA, Chicago, and Turabian:

• AMA (American Medical Association) for medicine, health, and biological sciences
• APA (American Psychological Association) for education, psychology, and the social sciences
• Chicago—a common style used in everyday publications like magazines, newspapers, and books
• MLA (Modern Language Association) for English, literature, arts, and humanities
• Turabian—another common style designed for its universal application across all subjects and disciplines

While all the formatting and citation styles have their own use and applications, in this chapter we focus our attention on the two styles you are most likely to use in your academic studies: APA and MLA.

If you find that the rules of proper source documentation are difficult to keep straight, you are not alone. Writing a good research paper is, in and of itself, a major intellectual challenge. Having to follow detailed citation and formatting guidelines as well may seem like just one more task to add to an already-too-long list of requirements.

Following these guidelines, however, serves several important purposes. First, it signals to your readers that your paper should be taken seriously as a student’s contribution to a given academic or professional field; it is the literary equivalent of wearing a tailored suit to a job interview. Second, it shows that you respect other people’s work enough to give them proper credit for it. Finally, it helps your reader find additional materials if he or she wishes to learn more about your topic.

Furthermore, producing a letter-perfect APA-style paper need not be burdensome. Yes, it requires careful attention to detail. However, you can simplify the process if you keep these broad guidelines in mind:

• Work ahead whenever you can. Chapter 11 “Writing from Research: What Will I Learn?” includes tips for keeping track of your sources early in the research process, which will save time later on.
• Get it right the first time. Apply APA guidelines as you write, so you will not have much to correct during the editing stage. Again, putting in a little extra time early on can save time later.
• Use the resources available to you. In addition to the guidelines provided in this chapter, you may wish to consult the APA website at http://www.apa.org or the Purdue University Online Writing lab at http://owl.english.purdue.edu , which regularly updates its online style guidelines.

General Formatting Guidelines

This chapter provides detailed guidelines for using the citation and formatting conventions developed by the American Psychological Association, or APA. Writers in disciplines as diverse as astrophysics, biology, psychology, and education follow APA style. The major components of a paper written in APA style are listed in the following box.

These are the major components of an APA-style paper:

Body, which includes the following:

• Headings and, if necessary, subheadings to organize the content
• In-text citations of research sources
• References page

All these components must be saved in one document, not as separate documents.

The title page of your paper includes the following information:

• Title of the paper
• Author’s name
• Name of the institution with which the author is affiliated
• Header at the top of the page with the paper title (in capital letters) and the page number (If the title is lengthy, you may use a shortened form of it in the header.)

List the first three elements in the order given in the previous list, centered about one third of the way down from the top of the page. Use the headers and footers tool of your word-processing program to add the header, with the title text at the left and the page number in the upper-right corner. Your title page should look like the following example.

The next page of your paper provides an abstract , or brief summary of your findings. An abstract does not need to be provided in every paper, but an abstract should be used in papers that include a hypothesis. A good abstract is concise—about one hundred fifty to two hundred fifty words—and is written in an objective, impersonal style. Your writing voice will not be as apparent here as in the body of your paper. When writing the abstract, take a just-the-facts approach, and summarize your research question and your findings in a few sentences.

In Chapter 12 “Writing a Research Paper” , you read a paper written by a student named Jorge, who researched the effectiveness of low-carbohydrate diets. Read Jorge’s abstract. Note how it sums up the major ideas in his paper without going into excessive detail.

Write an abstract summarizing your paper. Briefly introduce the topic, state your findings, and sum up what conclusions you can draw from your research. Use the word count feature of your word-processing program to make sure your abstract does not exceed one hundred fifty words.

Depending on your field of study, you may sometimes write research papers that present extensive primary research, such as your own experiment or survey. In your abstract, summarize your research question and your findings, and briefly indicate how your study relates to prior research in the field.

Margins, Pagination, and Headings

APA style requirements also address specific formatting concerns, such as margins, pagination, and heading styles, within the body of the paper. Review the following APA guidelines.

Use these general guidelines to format the paper:

• Set the top, bottom, and side margins of your paper at 1 inch.
• Use double-spaced text throughout your paper.
• Use a standard font, such as Times New Roman or Arial, in a legible size (10- to 12-point).
• Use continuous pagination throughout the paper, including the title page and the references section. Page numbers appear flush right within your header.
• Section headings and subsection headings within the body of your paper use different types of formatting depending on the level of information you are presenting. Additional details from Jorge’s paper are provided.

Begin formatting the final draft of your paper according to APA guidelines. You may work with an existing document or set up a new document if you choose. Include the following:

• Your title page
• The abstract you created in Note 13.8 “Exercise 1”
• Correct headers and page numbers for your title page and abstract

APA style uses section headings to organize information, making it easy for the reader to follow the writer’s train of thought and to know immediately what major topics are covered. Depending on the length and complexity of the paper, its major sections may also be divided into subsections, sub-subsections, and so on. These smaller sections, in turn, use different heading styles to indicate different levels of information. In essence, you are using headings to create a hierarchy of information.

The following heading styles used in APA formatting are listed in order of greatest to least importance:

• Section headings use centered, boldface type. Headings use title case, with important words in the heading capitalized.
• Subsection headings use left-aligned, boldface type. Headings use title case.
• The third level uses left-aligned, indented, boldface type. Headings use a capital letter only for the first word, and they end in a period.
• The fourth level follows the same style used for the previous level, but the headings are boldfaced and italicized.
• The fifth level follows the same style used for the previous level, but the headings are italicized and not boldfaced.

Visually, the hierarchy of information is organized as indicated in Table 13.1 “Section Headings” .

Table 13.1 Section Headings

A college research paper may not use all the heading levels shown in Table 13.1 “Section Headings” , but you are likely to encounter them in academic journal articles that use APA style. For a brief paper, you may find that level 1 headings suffice. Longer or more complex papers may need level 2 headings or other lower-level headings to organize information clearly. Use your outline to craft your major section headings and determine whether any subtopics are substantial enough to require additional levels of headings.

Working with the document you developed in Note 13.11 “Exercise 2” , begin setting up the heading structure of the final draft of your research paper according to APA guidelines. Include your title and at least two to three major section headings, and follow the formatting guidelines provided above. If your major sections should be broken into subsections, add those headings as well. Use your outline to help you.

Because Jorge used only level 1 headings, his Exercise 3 would look like the following:

Citation Guidelines

In-text citations.

Throughout the body of your paper, include a citation whenever you quote or paraphrase material from your research sources. As you learned in Chapter 11 “Writing from Research: What Will I Learn?” , the purpose of citations is twofold: to give credit to others for their ideas and to allow your reader to follow up and learn more about the topic if desired. Your in-text citations provide basic information about your source; each source you cite will have a longer entry in the references section that provides more detailed information.

In-text citations must provide the name of the author or authors and the year the source was published. (When a given source does not list an individual author, you may provide the source title or the name of the organization that published the material instead.) When directly quoting a source, it is also required that you include the page number where the quote appears in your citation.

This information may be included within the sentence or in a parenthetical reference at the end of the sentence, as in these examples.

Epstein (2010) points out that “junk food cannot be considered addictive in the same way that we think of psychoactive drugs as addictive” (p. 137).

Here, the writer names the source author when introducing the quote and provides the publication date in parentheses after the author’s name. The page number appears in parentheses after the closing quotation marks and before the period that ends the sentence.

Addiction researchers caution that “junk food cannot be considered addictive in the same way that we think of psychoactive drugs as addictive” (Epstein, 2010, p. 137).

Here, the writer provides a parenthetical citation at the end of the sentence that includes the author’s name, the year of publication, and the page number separated by commas. Again, the parenthetical citation is placed after the closing quotation marks and before the period at the end of the sentence.

As noted in the book Junk Food, Junk Science (Epstein, 2010, p. 137), “junk food cannot be considered addictive in the same way that we think of psychoactive drugs as addictive.”

Here, the writer chose to mention the source title in the sentence (an optional piece of information to include) and followed the title with a parenthetical citation. Note that the parenthetical citation is placed before the comma that signals the end of the introductory phrase.

David Epstein’s book Junk Food, Junk Science (2010) pointed out that “junk food cannot be considered addictive in the same way that we think of psychoactive drugs as addictive” (p. 137).

Another variation is to introduce the author and the source title in your sentence and include the publication date and page number in parentheses within the sentence or at the end of the sentence. As long as you have included the essential information, you can choose the option that works best for that particular sentence and source.

Citing a book with a single author is usually a straightforward task. Of course, your research may require that you cite many other types of sources, such as books or articles with more than one author or sources with no individual author listed. You may also need to cite sources available in both print and online and nonprint sources, such as websites and personal interviews. Chapter 13 “APA and MLA Documentation and Formatting” , Section 13.2 “Citing and Referencing Techniques” and Section 13.3 “Creating a References Section” provide extensive guidelines for citing a variety of source types.

Writing at Work

APA is just one of several different styles with its own guidelines for documentation, formatting, and language usage. Depending on your field of interest, you may be exposed to additional styles, such as the following:

• MLA style. Determined by the Modern Languages Association and used for papers in literature, languages, and other disciplines in the humanities.
• Chicago style. Outlined in the Chicago Manual of Style and sometimes used for papers in the humanities and the sciences; many professional organizations use this style for publications as well.
• Associated Press (AP) style. Used by professional journalists.

References List

The brief citations included in the body of your paper correspond to the more detailed citations provided at the end of the paper in the references section. In-text citations provide basic information—the author’s name, the publication date, and the page number if necessary—while the references section provides more extensive bibliographical information. Again, this information allows your reader to follow up on the sources you cited and do additional reading about the topic if desired.

The specific format of entries in the list of references varies slightly for different source types, but the entries generally include the following information:

• The name(s) of the author(s) or institution that wrote the source
• The year of publication and, where applicable, the exact date of publication
• The full title of the source
• For books, the city of publication
• For articles or essays, the name of the periodical or book in which the article or essay appears
• For magazine and journal articles, the volume number, issue number, and pages where the article appears
• For sources on the web, the URL where the source is located

The references page is double spaced and lists entries in alphabetical order by the author’s last name. If an entry continues for more than one line, the second line and each subsequent line are indented five spaces. Review the following example. ( Chapter 13 “APA and MLA Documentation and Formatting” , Section 13.3 “Creating a References Section” provides extensive guidelines for formatting reference entries for different types of sources.)

In APA style, book and article titles are formatted in sentence case, not title case. Sentence case means that only the first word is capitalized, along with any proper nouns.

Key Takeaways

• Following proper citation and formatting guidelines helps writers ensure that their work will be taken seriously, give proper credit to other authors for their work, and provide valuable information to readers.
• Working ahead and taking care to cite sources correctly the first time are ways writers can save time during the editing stage of writing a research paper.
• APA papers usually include an abstract that concisely summarizes the paper.
• APA papers use a specific headings structure to provide a clear hierarchy of information.
• In APA papers, in-text citations usually include the name(s) of the author(s) and the year of publication.
• In-text citations correspond to entries in the references section, which provide detailed bibliographical information about a source.

Writing for Success Copyright © 2015 by University of Minnesota is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License , except where otherwise noted.

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• How to format tables and figures in APA Style

APA Format for Tables and Figures | Annotated Examples

Published on November 5, 2020 by Jack Caulfield . Revised on January 17, 2024.

A table concisely presents information (often numbers) in rows and columns. A figure is any other image or illustration you include in your text—anything from a bar chart to a photograph.

Tables and figures differ in terms of how they convey information, but APA Style presents them in a similar format—preceded by a number and title, and followed by explanatory notes (if necessary).

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Table of contents

Apa table format, apa figure format, numbering and titling tables and figures, formatting table and figure notes, where to place tables and figures, referring to tables and figures in the text, frequently asked questions about apa tables and figures.

Tables will vary in size and structure depending on the data you’re presenting, but APA gives some general guidelines for their design. To correctly format an APA table, follow these rules:

• Table number in bold above the table.
• Brief title, in italics and title case, below the table number.
• No vertical lines.
• Horizontal lines only where necessary for clarity.
• Clear, concise labels for column and row headings.
• Numbers consistently formatted (e.g. with the same number of decimal places).
• Any relevant notes below the table.

An example of a table formatted according to APA guidelines is shown below.

The table above uses only four lines: Those at the top and bottom, and those separating the main data from the column heads and the totals.

Create your tables using the tools built into your word processor. In Word, you can use the “ Insert table ” tool.

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Any images used within your text are called figures. Figures include data visualization graphics—e.g. graphs, diagrams, flowcharts—as well as things like photographs and artworks.

To correctly format an APA figure, follow these rules:

• Figure number in bold above the figure.
• Brief title, in italics and title case, under the figure number.
• If necessary, clear labels and legends integrated into the image.
• Any relevant notes below the figure.

An example of a figure formatted according to APA guidelines is shown below.

Keep the design of figures as simple as possible. Use colors only where necessary, not just to make the image look more appealing.

For text within the image itself, APA recommends using a sans serif font (e.g. Arial) with a size between 8 and 14 points.

For other figures, such as photographs, you won’t need a legend; the figure consists simply of the image itself, reproduced at an appropriate size and resolution.

Each table or figure is preceded by a number and title.

Tables and figures are each numbered separately, in the order they are referred to in your text. For example, the first table you refer to is Table 1; the fourth figure you refer to is Figure 4.

The title should clearly and straightforwardly describe the content of the table or figure. Omit articles to keep it concise.

The table or figure number appears on its own line, in bold, followed by the title on the following line, in italics and title case.

Where a table or figure needs further explanation, notes should be included immediately after it. These are not your analysis of the data presented; save that for the main text.

There are three kinds of notes: general , specific , and probability . Each type of note appears in a new paragraph, but multiple notes of the same kind all appear in one paragraph.

Only include the notes that are needed to understand the table or figure. It may be that it is clear in itself, and has no notes, or only probability notes; be as concise as possible.

General notes

General notes come first. They are preceded by the word “ Note ” in italics, followed by a period. They include any explanations that apply to the table or figure as a whole and a citation if it was adapted from another source, and they end with definitions of any abbreviations used.

Specific notes

Specific notes refer to specific points in the table or figure. Superscript letters (a, b, c …) appear at the relevant points in the table or figure and at the start of each note to indicate what they refer to. They are used when it’s necessary to comment on a specific data point or term.

Probability notes

Probability notes give p -values for the data in the table or figure. They correspond to asterisks (and/or other symbols) in the table or figure.

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You have two options for the placement of tables and figures in APA Style:

• Option 1: Place tables and figures throughout your text, shortly after the parts of the text that refer to them.
• Option 2: Place them all together at the end of your text (after the reference list) to avoid breaking up the text.

If you place them throughout the text, note that each table or figure should only appear once. If you refer to the same table or figure more than once, don’t reproduce it each time—just place it after the paragraph in which it’s first discussed.

Align the table or figure with the text along the left margin. Leave a line break before and after the table or figure to clearly distinguish it from the main text, and place it on a new page if necessary to avoid splitting it across multiple pages.

If you place all your tables and figures at the end, you should have one table or figure on each page. Begin with all your tables, then place all your figures afterwards.

Avoid making redundant statements about your tables and figures in your text. When you write about data from tables and figures, it should be to highlight or analyze a particular data point or trend, not simply to restate what is already clearly shown in the table or figure:

• As Table 1 shows, there are 115 boys in Grade 4, 130 in Grade 5, and 117 in Grade 6 …
• Table 1 indicates a notable preponderance of boys in Grade 5. It is important to take this into account because …

Additionally, even if you have embedded your tables and figures in your text, refer to them by their numbers, not by their position relative to the text or by description:

• The table below shows…
• Table 1 shows…
• As can be seen in the image on page 4…
• As can be seen in Figure 3…
• The photograph of a bald eagle is an example of…
• Figure 1 is an example of…

In an APA Style paper , use a table or figure when it’s a clearer way to present important data than describing it in your main text. This is often the case when you need to communicate a large amount of information.

Before including a table or figure in your text, always reflect on whether it’s useful to your readers’ understanding:

• Could this information be quickly summarized in the text instead?
• Is it important to your arguments?
• Does the table or figure require too much explanation to be efficient?

If the data you need to present only contains a few relevant numbers, try summarizing it in the text (potentially including full data in an appendix ). If describing the data makes your text overly long and difficult to read, a table or figure may be the best option.

APA doesn’t require you to include a list of tables or a list of figures . However, it is advisable to do so if your text is long enough to feature a table of contents and it includes a lot of tables and/or figures.

A list of tables and list of figures appear (in that order) after your table of contents , and are presented in a similar way.

If you adapt or reproduce a table or figure from another source, you should include that source in your APA reference list . You should also acknowledge the original source in the note or caption for the table or figure.

Tables and figures you created yourself, based on your own data, are not included in the reference list.

In most styles, the title page is used purely to provide information and doesn’t include any images. Ask your supervisor if you are allowed to include an image on the title page before doing so. If you do decide to include one, make sure to check whether you need permission from the creator of the image.

Include a note directly beneath the image acknowledging where it comes from, beginning with the word “ Note .” (italicized and followed by a period). Include a citation and copyright attribution . Don’t title, number, or label the image as a figure , since it doesn’t appear in your main text.

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How to properly format numbers in academic essays – a comprehensive guide.

When writing academic essays, it is crucial to follow certain guidelines to ensure your work is clear, accurate, and professional. One area that often causes confusion is the use of numbers. Should you write numbers out in full or use numerals? Are there specific rules for when to use each format? In this article, we will explore the best practices for using numbers in academic writing to help you convey your ideas effectively.

One of the primary rules to keep in mind when using numbers in academic essays is consistency. Choose a style guide, such as APA or MLA, and stick to its guidelines throughout your paper. This will help maintain a uniform appearance and make your work easier to read. Additionally, consider the context in which you are using numbers. Are you discussing statistics, measurements, or dates? Each of these may require a different approach to ensure clarity and accuracy.

Another important aspect of using numbers in academic writing is knowing when to write them out in full and when to use numerals. In general, numbers zero to nine are typically written out in full (e.g., three, seven), while numerals are used for numbers 10 and above (e.g., 15, 42). However, there are exceptions to this rule, so be sure to consult your style guide for specific cases.

Importance of Using Numbers

Numbers play a crucial role in academic essays as they provide a concrete and quantitative basis for arguments and evidence. When used appropriately, numbers can add credibility and precision to your writing, making your arguments more convincing and compelling.

By including specific numerical data, such as statistics, percentages, or numerical examples, you can enhance the clarity and accuracy of your statements. Numbers can help quantify the magnitude of a problem, demonstrate trends over time, or compare different scenarios effectively.

Additionally, numbers can enhance the reader’s understanding of complex concepts and ideas by providing a clear and measurable context. They can also help you make your arguments more persuasive and impactful by presenting evidence in a concise and structured manner.

Overall, using numbers in academic essays is essential for presenting factual information, supporting your arguments with evidence, and making your writing more precise and effective. Properly integrating numbers into your writing can significantly strengthen your academic work and contribute to its overall quality.

Formatting Guidelines for Numbers

When writing academic essays, it is important to follow specific formatting guidelines for numbers to ensure clarity and consistency throughout your paper. Here are some key rules to keep in mind:

1. Spell out numbers one to nine: In general, spell out numbers from one to nine (e.g., “two apples”, “seven participants”) to improve readability and avoid confusion.

2. Use numerals for numbers 10 and above: Use numerals for numbers 10 and above (e.g., “12 years old”, “22 participants”) to maintain consistency in your writing.

3. Use numerals for measurements and percentages: Always use numerals for measurements (e.g., “5 meters”, “10 kilograms”) and percentages (e.g., “25%”) to provide accurate and precise information.

4. Use commas for numbers with four or more digits: Use commas to separate thousands, millions, etc., in numbers with four or more digits (e.g., 1,000, 10,000,000).

5. Be consistent in using numerical formats: Maintain consistency in how you present numbers within your essay. For instance, if you start a list with numerals, continue using numerals for the rest of the list.

Proper Use of Numerals

When writing an academic essay, it is important to know how to properly use numerals. Here are some guidelines to follow:

1. Use numerals for numbers 10 and above: When expressing numbers 10 and above, use numerals. For example, “There were 15 participants in the study.”

2. Spell out numbers below 10: For numbers below 10, spell them out. For example, “There were seven different hypotheses tested in the study.”

3. Use numerals for units of measurement and time: Use numerals when expressing units of measurement (5 grams) and time (6 hours).

4. Consistency is key: Be consistent in your use of numerals throughout the essay. If you start with numerals, continue to use numerals for similar types of information.

5. Follow style guidelines: Some academic disciplines have specific style guidelines for the use of numerals. Make sure to follow the guidelines provided by your institution or the journal you are submitting to.

By following these guidelines, you can ensure that your use of numerals in your academic essay is clear and consistent.

Writing Numbers as Words

When writing numbers in academic essays, it is important to follow the style guide provided by your institution or the specific guidelines of the publication you are submitting your work to. In general, numbers from one to nine are typically written out as words (e.g., “two” or “seven”), while numbers 10 and above are written as numerals (e.g., 10 or 27). However, there can be exceptions to this rule depending on the style guide being used.

It is also a good practice to spell out ordinal numbers (e.g., first, second, third) rather than using numerals (e.g., 1st, 2nd, 3rd) in academic writing. This helps maintain consistency and clarity throughout your essay. Additionally, when a sentence begins with a number, it is generally recommended to write it out as a word to avoid starting a sentence with a numeral.

Remember to always check the specific style guide you are required to follow for any variations or exceptions when writing numbers in your academic essays. Consistency and accuracy are key to conveying your ideas clearly and professionally.

Consistency in Number Usage

When writing academic essays, it is essential to maintain consistency in the usage of numbers throughout the document. This consistency applies to both the style and format of numbers used in the text. Here are some guidelines to ensure proper usage:

• Choose a style guide and follow its rules for writing numbers. Some style guides prefer spelling out numbers from one to ten and using numerals for numbers above ten, while others may have different preferences.
• Be consistent within the same sentence or paragraph. For example, if you spell out a number in one instance, make sure to do the same for similar numbers in the following sentences.
• Decide on a format for dates, times, and measurements and stick to it throughout the essay. For instance, choose between writing dates in the month-day-year format or the day-month-year format and use it consistently.
• Use numerals for percentages, decimals, fractions, and numbers with scientific units. Make sure to format these numbers according to the conventions of your chosen style guide.

By maintaining consistency in number usage, you can improve the readability and professionalism of your academic writing. Paying attention to these details demonstrates your attention to accuracy and precision in your work.

Tips for Enhancing Clarity

When using numbers in academic essays, it is essential to prioritize clarity to ensure that your reader can easily follow your arguments and understand your points. Here are some tips to enhance the clarity of your numerical expressions:

By following these tips, you can effectively enhance the clarity of your numerical expressions in academic essays and improve the overall readability of your work.

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How to insert page numbers: apa 7th edition guidelines, published by steve tippins on january 17, 2022 january 17, 2022.

Last Updated on: 2nd February 2024, 02:56 am

There are straightforward guidelines for inserting page numbers according to APA 7th edition guidelines. To start with, here are the basics:

• The numbers should be put in a header at the top right of the page.
• They should be the same font and size as the rest of your paper.
• Number the first page, with a 1. Thereafter, each of the subsequent pages will be numbered automatically.
• Do not write “page” or “p.” or “pp.”

Here are step-by-step instructions for inserting APA page numbers, with screenshots to guide your way.

Inserting Numeral Page Numbers

Step 1: Open the “Header & Footer” tab in the header, click on Insert and select “Page Number.”

Step 2: If you want to have a different first page and do not want number 1 to appear on this page, then click on “Different First Page.”

Step 3: From the drop-down list, choose “Top of Page.” Next, choose “Plain Number 3.”

Step 4: Click on “Close Header and Footer” in the ribbon.

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Inserting Roman Numeral Page Numbers

If you need to paginate front matter material, such as an abstract, acknowledgments, or table of contents, the process is a little different.

Step 1: Insert a section break between the front material and Chapter 1.

Step 2: In the “Layout” tab, click on the drop-down arrow beside “Breaks.”

Step 3: Click on “Next Page” in “Section Breaks.”

Step 4: Repeats steps 1 or 2 above. In the drop-down list, open “Format Page Numbers.”

Step 5: Select “Roman” in the “Page Number Format” part of the drop-down list.

Step 6: On the first page of Chapter 1, repeat the above process. This is when you begin to start numbering the pages of your Chapter 1 using numerals 1, 2, 3, etc. To paginate Chapter 1 as page 1, choose “Start at,” and then put in the number 1.

Note : For more information, refer to Section 2.18 of the APA Publication Manual , Seventh Edition.

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A step-by-step guide for creating and formatting APA Style student papers

The start of the semester is the perfect time to learn how to create and format APA Style student papers. This article walks through the formatting steps needed to create an APA Style student paper, starting with a basic setup that applies to the entire paper (margins, font, line spacing, paragraph alignment and indentation, and page headers). It then covers formatting for the major sections of a student paper: the title page, the text, tables and figures, and the reference list. Finally, it concludes by describing how to organize student papers and ways to improve their quality and presentation.

The guidelines for student paper setup are described and shown using annotated diagrams in the Student Paper Setup Guide (PDF, 3.40MB) and the A Step-by-Step Guide to APA Style Student Papers webinar . Chapter 1 of the Concise Guide to APA Style and Chapter 2 of the Publication Manual of the American Psychological Association describe the elements, format, and organization for student papers. Tables and figures are covered in Chapter 7 of both books. Information on paper format and tables and figures and a full sample student paper are also available on the APA Style website.

Basic setup

The guidelines for basic setup apply to the entire paper. Perform these steps when you first open your document, and then you do not have to worry about them again while writing your paper. Because these are general aspects of paper formatting, they apply to all APA Style papers, student or professional. Students should always check with their assigning instructor or institution for specific guidelines for their papers, which may be different than or in addition to APA Style guidelines.

Seventh edition APA Style was designed with modern word-processing programs in mind. Most default settings in programs such as Academic Writer, Microsoft Word, and Google Docs already comply with APA Style. This means that, for most paper elements, you do not have to make any changes to the default settings of your word-processing program. However, you may need to make a few adjustments before you begin writing.

Use 1-in. margins on all sides of the page (top, bottom, left, and right). This is usually how papers are automatically set.

Use a legible font. The default font of your word-processing program is acceptable. Many sans serif and serif fonts can be used in APA Style, including 11-point Calibri, 11-point Arial, 12-point Times New Roman, and 11-point Georgia. You can also use other fonts described on the font page of the website.

Line spacing

Double-space the entire paper including the title page, block quotations, and the reference list. This is something you usually must set using the paragraph function of your word-processing program. But once you do, you will not have to change the spacing for the entirety of your paper–just double-space everything. Do not add blank lines before or after headings. Do not add extra spacing between paragraphs. For paper sections with different line spacing, see the line spacing page.

Paragraph alignment and indentation

Align all paragraphs of text in the body of your paper to the left margin. Leave the right margin ragged. Do not use full justification. Indent the first line of every paragraph of text 0.5-in. using the tab key or the paragraph-formatting function of your word-processing program. For paper sections with different alignment and indentation, see the paragraph alignment and indentation page.

Page numbers

Put a page number in the top right of every page header , including the title page, starting with page number 1. Use the automatic page-numbering function of your word-processing program to insert the page number in the top right corner; do not type the page numbers manually. The page number is the same font and font size as the text of your paper. Student papers do not require a running head on any page, unless specifically requested by the instructor.

Title page setup

Title page elements.

APA Style has two title page formats: student and professional (for details, see title page setup ). Unless instructed otherwise, students should use the student title page format and include the following elements, in the order listed, on the title page:

• Paper title.
• Name of each author (also known as the byline).
• Affiliation for each author.
• Course number and name.
• Instructor name.
• Assignment due date.
• Page number 1 in the top right corner of the page header.

The format for the byline depends on whether the paper has one author, two authors, or three or more authors.

• When the paper has one author, write the name on its own line (e.g., Jasmine C. Hernandez).
• When the paper has two authors, write the names on the same line and separate them with the word “and” (e.g., Upton J. Wang and Natalia Dominguez).
• When the paper has three or more authors, separate the names with commas and include “and” before the final author’s name (e.g., Malia Mohamed, Jaylen T. Brown, and Nia L. Ball).

Students have an academic affiliation, which identities where they studied when the paper was written. Because students working together on a paper are usually in the same class, they will have one shared affiliation. The affiliation consists of the name of the department and the name of the college or university, separated by a comma (e.g., Department of Psychology, George Mason University). The department is that of the course to which the paper is being submitted, which may be different than the department of the student’s major. Do not include the location unless it is part of the institution’s name.

Write the course number and name and the instructor name as shown on institutional materials (e.g., the syllabus). The course number and name are often separated by a colon (e.g., PST-4510: History and Systems Psychology). Write the assignment due date in the month, date, and year format used in your country (e.g., Sept. 10, 2020).

Title page line spacing

Double-space the whole title page. Place the paper title three or four lines down from the top of the page. Add an extra double-spaced blank like between the paper title and the byline. Then, list the other title page elements on separate lines, without extra lines in between.

Title page alignment

Center all title page elements (except the right-aligned page number in the header).

Title page font

Write the title page using the same font and font size as the rest of your paper. Bold the paper title. Use standard font (i.e., no bold, no italics) for all other title page elements.

Text elements

Repeat the paper title at the top of the first page of text. Begin the paper with an introduction to provide background on the topic, cite related studies, and contextualize the paper. Use descriptive headings to identify other sections as needed (e.g., Method, Results, Discussion for quantitative research papers). Sections and headings vary depending on the paper type and its complexity. Text can include tables and figures, block quotations, headings, and footnotes.

Text line spacing

Double-space all text, including headings and section labels, paragraphs of text, and block quotations.

Text alignment

Center the paper title on the first line of the text. Indent the first line of all paragraphs 0.5-in.

Left-align the text. Leave the right margin ragged.

Block quotation alignment

Indent the whole block quotation 0.5-in. from the left margin. Double-space the block quotation, the same as other body text. Find more information on the quotations page.

Use the same font throughout the entire paper. Write body text in standard (nonbold, nonitalic) font. Bold only headings and section labels. Use italics sparingly, for instance, to highlight a key term on first use (for more information, see the italics page).

Headings format

For detailed guidance on formatting headings, including headings in the introduction of a paper, see the headings page and the headings in sample papers .

• Alignment: Center Level 1 headings. Left-align Level 2 and Level 3 headings. Indent Level 4 and Level 5 headings like a regular paragraph.
• Font: Boldface all headings. Also italicize Level 3 and Level 5 headings. Create heading styles using your word-processing program (built into AcademicWriter, available for Word via the sample papers on the APA Style website).

Tables and figures setup

Tables and figures are only included in student papers if needed for the assignment. Tables and figures share the same elements and layout. See the website for sample tables and sample figures .

Table elements

Tables include the following four elements: 

• Body (rows and columns)
• Note (optional if needed to explain elements in the table)

Figure elements

Figures include the following four elements: 

• Image (chart, graph, etc.)
• Note (optional if needed to explain elements in the figure)

Table line spacing

Double-space the table number and title. Single-, 1.5-, or double-space the table body (adjust as needed for readability). Double-space the table note.

Figure line spacing

Double-space the figure number and title. The default settings for spacing in figure images is usually acceptable (but adjust the spacing as needed for readability). Double-space the figure note.

Table alignment

Left-align the table number and title. Center column headings. Left-align the table itself and left-align the leftmost (stub) column. Center data in the table body if it is short or left-align the data if it is long. Left-align the table note.

Figure alignment

Left-align the figure number and title. Left-align the whole figure image. The default alignment of the program in which you created your figure is usually acceptable for axis titles and data labels. Left-align the figure note.

Bold the table number. Italicize the table title. Use the same font and font size in the table body as the text of your paper. Italicize the word “Note” at the start of the table note. Write the note in the same font and font size as the text of your paper.

Figure font

Bold the figure number. Italicize the figure title. Use a sans serif font (e.g., Calibri, Arial) in the figure image in a size between 8 to 14 points. Italicize the word “Note” at the start of the figure note. Write the note in the same font and font size as the text of your paper.

Placement of tables and figures

There are two options for the placement of tables and figures in an APA Style paper. The first option is to place all tables and figures on separate pages after the reference list. The second option is to embed each table and figure within the text after its first callout. This guide describes options for the placement of tables and figures embedded in the text. If your instructor requires tables and figures to be placed at the end of the paper, see the table and figure guidelines and the sample professional paper .

Call out (mention) the table or figure in the text before embedding it (e.g., write “see Figure 1” or “Table 1 presents”). You can place the table or figure after the callout either at the bottom of the page, at the top of the next page, or by itself on the next page. Avoid placing tables and figures in the middle of the page.

Embedding at the bottom of the page

Include a callout to the table or figure in the text before that table or figure. Add a blank double-spaced line between the text and the table or figure at the bottom of the page.

Embedding at the top of the page

Include a callout to the table in the text on the previous page before that table or figure. The table or figure then appears at the top of the next page. Add a blank double-spaced line between the end of the table or figure and the text that follows.

Embedding on its own page

Embed long tables or large figures on their own page if needed. The text continues on the next page.

Reference list setup

Reference list elements.

The reference list consists of the “References” section label and the alphabetical list of references. View reference examples on the APA Style website. Consult Chapter 10 in both the Concise Guide and Publication Manual for even more examples.

Reference list line spacing

Start the reference list at the top of a new page after the text. Double-space the entire reference list (both within and between entries).

Reference list alignment

Center the “References” label. Apply a hanging indent of 0.5-in. to all reference list entries. Create the hanging indent using your word-processing program; do not manually hit the enter and tab keys.

Reference list font

Bold the “References” label at the top of the first page of references. Use italics within reference list entries on either the title (e.g., webpages, books, reports) or on the source (e.g., journal articles, edited book chapters).

Final checks

Check page order.

• Start each section on a new page.
• Arrange pages in the following order:
• Title page (page 1).
• Text (starts on page 2).
• Reference list (starts on a new page after the text).

Check headings

• Check that headings accurately reflect the content in each section.
• Start each main section with a Level 1 heading.
• Use Level 2 headings for subsections of the introduction.
• Use the same level of heading for sections of equal importance.
• Avoid having only one subsection within a section (have two or more, or none).

Check assignment instructions

• Remember that instructors’ guidelines supersede APA Style.
• Students should check their assignment guidelines or rubric for specific content to include in their papers and to make sure they are meeting assignment requirements.

Tips for better writing

• Ask for feedback on your paper from a classmate, writing center tutor, or instructor.
• Budget time to implement suggestions.
• Use spell-check and grammar-check to identify potential errors, and then manually check those flagged.
• Proofread the paper by reading it slowly and carefully aloud to yourself.
• Consult your university writing center if you need extra help.

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Paper Format

Consistency in the order, structure, and format of a paper allows readers to focus on a paper’s content rather than its presentation.

To format a paper in APA Style, writers can typically use the default settings and automatic formatting tools of their word-processing program or make only minor adjustments.

The guidelines for paper format apply to both student assignments and manuscripts being submitted for publication to a journal. If you are using APA Style to create another kind of work (e.g., a website, conference poster, or PowerPoint presentation), you may need to format your work differently in order to optimize its presentation, for example, by using different line spacing and font sizes. Follow the guidelines of your institution or publisher to adapt APA Style formatting guidelines as needed.

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Numbered References

This section describes the numbered reference system and gives examples from one version of the system.* Ask your instructor what specific style to use.

Documentation styles for chemistry, computer science, mathematics, physics, and medical sciences are summarized in James D. Lester, Writing Research Papers, 5th ed., pp. 231-237, available in the Writing Center.

*This version is used, with slight variations, in many journals and in two books on scientific writing: Robert A. Day’s How to Write and Publish a Scientific Paper and F. Peter Woodford’s Scientific Writing for Graduate Students (both available in the Writing Center).

Create a reference list

List the works cited, with corresponding numbers, on a new page after the text, titled References . Although the sample list below is not arranged alphabetically, you should arrange your reference list in alphabetical order.

Check James D. Lester, Writing Research Papers, 5th ed., pp. 231-237 (available in the Writing Center) or the documentation manual for your field for arrangement and numbering of the list and for style and order of elements within each entry.

Use the table below for guidelines on how to format the entries in a numbered reference list.

Book (1): Single author

1. Zimmerman, B.K. 1984. Biofuture, confronting the genetic era. Plenum Press, New York.

Book (2): 2 authors

2. Nelkin, D., and M. Pollack. 1980. Problems and procedures in the regulation of technological risk. In R. Schwing and W. Albers (eds.), Societal risk management. p. 136-67. Plenum Press, New York.

Book (3): Editor in place of author

3. Milunsky, A., and G.J. Annas (eds.). 1976. Genetics and the law. Plenum Press, New York.

Book (4): 2nd or later edition

4. Burns, George W. 1980. The science of genetics: an introduction to heredity. 4th ed. Macmillan. New York.

Book (5): Volume in a multivolume work

5. Hotchkiss, R.D. 1980. Recombinant DNA research, vol. 5. NIH Publication No. 80-2130.

Book (6): Subtitled volume of multivolume work

6. Office of Technology Assessment, U.S. Congress. 1980. Energy for biological processes, vol. 2. Technical analysis. U.S. Government Printing Office, Washington, D.C.

Book (7): Article in edited collection

7. Nelkin, D., and M. Pollack. 1980. Problems and procedures in the regulation of technological risk. In R. Schwing and W. Albers (eds.), Societal risk management. p. 136-67. Plenum Press, New York.

Book (8): Corporate author

8. National Research Council. 1977. World food and nutrition study: the potential contributions of research. Author, Washington, D.C.

9. Office of Technology Assessment, U.S. Congress. 1980. Energy for biological processes, vol. 2. Technical analysis. U.S. Government Printing Office, Washington, D.C.

Journal Article (1): Single author

10. Myers, N. 1979. Conserving our global stock. Environment 21: 25-30.

Journal Article (2): More than 1 author

11. Israel, M.A., et al. 1979. Molecular cloning of polyoma virus DNA in escherichia coli: plasmid vector systems. Science 203: 883-887.

Journal Article (3): In edited collection

12. Nelkin, D., and M. Pollack. 1980. Problems and procedures in the regulation of technological risk. In R. Schwing and W. Albers (eds.), Societal risk management. p. 136-67. Plenum Press, New York.

Create in-text citations

When using numbered references, cite a source by using the number assigned to that source in the reference list.

Use the information below for guidelines on how to cite numbered references correctly in your text.

Number your citations

Depending upon the system used in your field, either:

• Arrange the sources you cite alphabetically and then number them; or
• Number the citations consecutively according to the first mention of each source in the text (using the same number for subsequent references to the same source).

Format your citations

• Place the number in parentheses or in square brackets; or
• Use a superscript (a number above the text line, as for a footnote).

Include a page number

Add a comma and the page number(s) of the source.

The method was described in 1979 (2, p. 885).

[The citation indicates that the method was described on page 885 of reference number 2 (Israel et al.) on the reference list in the Writing Center handout about numbered references entitled “The Reference List.” Notice that the period for the sentence comes after the closing parenthesis.]

Make the citation part of your sentence

Place the number directly after the author’s name or mention of the work :

The work of Nelkin and Pollack (6) supports this theory.

A 1979 study (4) showed. . . .

You can refer to a number of works within one pair of parentheses or brackets or in a series of superscript numbers:

Numerous studies (1, 3, 4, 8, 9) refer to . . .

Cite References in Your Paper

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GPT-fabricated scientific papers on Google Scholar: Key features, spread, and implications for preempting evidence manipulation

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Academic journals, archives, and repositories are seeing an increasing number of questionable research papers clearly produced using generative AI. They are often created with widely available, general-purpose AI applications, most likely ChatGPT, and mimic scientific writing. Google Scholar easily locates and lists these questionable papers alongside reputable, quality-controlled research. Our analysis of a selection of questionable GPT-fabricated scientific papers found in Google Scholar shows that many are about applied, often controversial topics susceptible to disinformation: the environment, health, and computing. The resulting enhanced potential for malicious manipulation of society’s evidence base, particularly in politically divisive domains, is a growing concern.

Swedish School of Library and Information Science, University of Borås, Sweden

Department of Arts and Cultural Sciences, Lund University, Sweden

Division of Environmental Communication, Swedish University of Agricultural Sciences, Sweden

Research Questions

• Where are questionable publications produced with generative pre-trained transformers (GPTs) that can be found via Google Scholar published or deposited?
• What are the main characteristics of these publications in relation to predominant subject categories?
• How are these publications spread in the research infrastructure for scholarly communication?
• How is the role of the scholarly communication infrastructure challenged in maintaining public trust in science and evidence through inappropriate use of generative AI?

research note Summary

• A sample of scientific papers with signs of GPT-use found on Google Scholar was retrieved, downloaded, and analyzed using a combination of qualitative coding and descriptive statistics. All papers contained at least one of two common phrases returned by conversational agents that use large language models (LLM) like OpenAI’s ChatGPT. Google Search was then used to determine the extent to which copies of questionable, GPT-fabricated papers were available in various repositories, archives, citation databases, and social media platforms.
• Roughly two-thirds of the retrieved papers were found to have been produced, at least in part, through undisclosed, potentially deceptive use of GPT. The majority (57%) of these questionable papers dealt with policy-relevant subjects (i.e., environment, health, computing), susceptible to influence operations. Most were available in several copies on different domains (e.g., social media, archives, and repositories).
• Two main risks arise from the increasingly common use of GPT to (mass-)produce fake, scientific publications. First, the abundance of fabricated “studies” seeping into all areas of the research infrastructure threatens to overwhelm the scholarly communication system and jeopardize the integrity of the scientific record. A second risk lies in the increased possibility that convincingly scientific-looking content was in fact deceitfully created with AI tools and is also optimized to be retrieved by publicly available academic search engines, particularly Google Scholar. However small, this possibility and awareness of it risks undermining the basis for trust in scientific knowledge and poses serious societal risks.

Implications

The use of ChatGPT to generate text for academic papers has raised concerns about research integrity. Discussion of this phenomenon is ongoing in editorials, commentaries, opinion pieces, and on social media (Bom, 2023; Stokel-Walker, 2024; Thorp, 2023). There are now several lists of papers suspected of GPT misuse, and new papers are constantly being added. 1 See for example Academ-AI, https://www.academ-ai.info/ , and Retraction Watch, https://retractionwatch.com/papers-and-peer-reviews-with-evidence-of-chatgpt-writing/ . While many legitimate uses of GPT for research and academic writing exist (Huang & Tan, 2023; Kitamura, 2023; Lund et al., 2023), its undeclared use—beyond proofreading—has potentially far-reaching implications for both science and society, but especially for their relationship. It, therefore, seems important to extend the discussion to one of the most accessible and well-known intermediaries between science, but also certain types of misinformation, and the public, namely Google Scholar, also in response to the legitimate concerns that the discussion of generative AI and misinformation needs to be more nuanced and empirically substantiated  (Simon et al., 2023).

Google Scholar, https://scholar.google.com , is an easy-to-use academic search engine. It is available for free, and its index is extensive (Gusenbauer & Haddaway, 2020). It is also often touted as a credible source for academic literature and even recommended in library guides, by media and information literacy initiatives, and fact checkers (Tripodi et al., 2023). However, Google Scholar lacks the transparency and adherence to standards that usually characterize citation databases. Instead, Google Scholar uses automated crawlers, like Google’s web search engine (Martín-Martín et al., 2021), and the inclusion criteria are based on primarily technical standards, allowing any individual author—with or without scientific affiliation—to upload papers to be indexed (Google Scholar Help, n.d.). It has been shown that Google Scholar is susceptible to manipulation through citation exploits (Antkare, 2020) and by providing access to fake scientific papers (Dadkhah et al., 2017). A large part of Google Scholar’s index consists of publications from established scientific journals or other forms of quality-controlled, scholarly literature. However, the index also contains a large amount of gray literature, including student papers, working papers, reports, preprint servers, and academic networking sites, as well as material from so-called “questionable” academic journals, including paper mills. The search interface does not offer the possibility to filter the results meaningfully by material type, publication status, or form of quality control, such as limiting the search to peer-reviewed material.

To understand the occurrence of ChatGPT (co-)authored work in Google Scholar’s index, we scraped it for publications, including one of two common ChatGPT responses (see Appendix A) that we encountered on social media and in media reports (DeGeurin, 2024). The results of our descriptive statistical analyses showed that around 62% did not declare the use of GPTs. Most of these GPT-fabricated papers were found in non-indexed journals and working papers, but some cases included research published in mainstream scientific journals and conference proceedings. 2 Indexed journals mean scholarly journals indexed by abstract and citation databases such as Scopus and Web of Science, where the indexation implies journals with high scientific quality. Non-indexed journals are journals that fall outside of this indexation. More than half (57%) of these GPT-fabricated papers concerned policy-relevant subject areas susceptible to influence operations. To avoid increasing the visibility of these publications, we abstained from referencing them in this research note. However, we have made the data available in the Harvard Dataverse repository.

The publications were related to three issue areas—health (14.5%), environment (19.5%) and computing (23%)—with key terms such “healthcare,” “COVID-19,” or “infection”for health-related papers, and “analysis,” “sustainable,” and “global” for environment-related papers. In several cases, the papers had titles that strung together general keywords and buzzwords, thus alluding to very broad and current research. These terms included “biology,” “telehealth,” “climate policy,” “diversity,” and “disrupting,” to name just a few.  While the study’s scope and design did not include a detailed analysis of which parts of the articles included fabricated text, our dataset did contain the surrounding sentences for each occurrence of the suspicious phrases that formed the basis for our search and subsequent selection. Based on that, we can say that the phrases occurred in most sections typically found in scientific publications, including the literature review, methods, conceptual and theoretical frameworks, background, motivation or societal relevance, and even discussion. This was confirmed during the joint coding, where we read and discussed all articles. It became clear that not just the text related to the telltale phrases was created by GPT, but that almost all articles in our sample of questionable articles likely contained traces of GPT-fabricated text everywhere.

Evidence hacking and backfiring effects

Generative pre-trained transformers (GPTs) can be used to produce texts that mimic scientific writing. These texts, when made available online—as we demonstrate—leak into the databases of academic search engines and other parts of the research infrastructure for scholarly communication. This development exacerbates problems that were already present with less sophisticated text generators (Antkare, 2020; Cabanac & Labbé, 2021). Yet, the public release of ChatGPT in 2022, together with the way Google Scholar works, has increased the likelihood of lay people (e.g., media, politicians, patients, students) coming across questionable (or even entirely GPT-fabricated) papers and other problematic research findings. Previous research has emphasized that the ability to determine the value and status of scientific publications for lay people is at stake when misleading articles are passed off as reputable (Haider & Åström, 2017) and that systematic literature reviews risk being compromised (Dadkhah et al., 2017). It has also been highlighted that Google Scholar, in particular, can be and has been exploited for manipulating the evidence base for politically charged issues and to fuel conspiracy narratives (Tripodi et al., 2023). Both concerns are likely to be magnified in the future, increasing the risk of what we suggest calling evidence hacking —the strategic and coordinated malicious manipulation of society’s evidence base.

The authority of quality-controlled research as evidence to support legislation, policy, politics, and other forms of decision-making is undermined by the presence of undeclared GPT-fabricated content in publications professing to be scientific. Due to the large number of archives, repositories, mirror sites, and shadow libraries to which they spread, there is a clear risk that GPT-fabricated, questionable papers will reach audiences even after a possible retraction. There are considerable technical difficulties involved in identifying and tracing computer-fabricated papers (Cabanac & Labbé, 2021; Dadkhah et al., 2023; Jones, 2024), not to mention preventing and curbing their spread and uptake.

However, as the rise of the so-called anti-vaxx movement during the COVID-19 pandemic and the ongoing obstruction and denial of climate change show, retracting erroneous publications often fuels conspiracies and increases the following of these movements rather than stopping them. To illustrate this mechanism, climate deniers frequently question established scientific consensus by pointing to other, supposedly scientific, studies that support their claims. Usually, these are poorly executed, not peer-reviewed, based on obsolete data, or even fraudulent (Dunlap & Brulle, 2020). A similar strategy is successful in the alternative epistemic world of the global anti-vaccination movement (Carrion, 2018) and the persistence of flawed and questionable publications in the scientific record already poses significant problems for health research, policy, and lawmakers, and thus for society as a whole (Littell et al., 2024). Considering that a person’s support for “doing your own research” is associated with increased mistrust in scientific institutions (Chinn & Hasell, 2023), it will be of utmost importance to anticipate and consider such backfiring effects already when designing a technical solution, when suggesting industry or legal regulation, and in the planning of educational measures.

Recommendations

Solutions should be based on simultaneous considerations of technical, educational, and regulatory approaches, as well as incentives, including social ones, across the entire research infrastructure. Paying attention to how these approaches and incentives relate to each other can help identify points and mechanisms for disruption. Recognizing fraudulent academic papers must happen alongside understanding how they reach their audiences and what reasons there might be for some of these papers successfully “sticking around.” A possible way to mitigate some of the risks associated with GPT-fabricated scholarly texts finding their way into academic search engine results would be to provide filtering options for facets such as indexed journals, gray literature, peer-review, and similar on the interface of publicly available academic search engines. Furthermore, evaluation tools for indexed journals 3 Such as LiU Journal CheckUp, https://ep.liu.se/JournalCheckup/default.aspx?lang=eng . could be integrated into the graphical user interfaces and the crawlers of these academic search engines. To enable accountability, it is important that the index (database) of such a search engine is populated according to criteria that are transparent, open to scrutiny, and appropriate to the workings of  science and other forms of academic research. Moreover, considering that Google Scholar has no real competitor, there is a strong case for establishing a freely accessible, non-specialized academic search engine that is not run for commercial reasons but for reasons of public interest. Such measures, together with educational initiatives aimed particularly at policymakers, science communicators, journalists, and other media workers, will be crucial to reducing the possibilities for and effects of malicious manipulation or evidence hacking. It is important not to present this as a technical problem that exists only because of AI text generators but to relate it to the wider concerns in which it is embedded. These range from a largely dysfunctional scholarly publishing system (Haider & Åström, 2017) and academia’s “publish or perish” paradigm to Google’s near-monopoly and ideological battles over the control of information and ultimately knowledge. Any intervention is likely to have systemic effects; these effects need to be considered and assessed in advance and, ideally, followed up on.

Our study focused on a selection of papers that were easily recognizable as fraudulent. We used this relatively small sample as a magnifying glass to examine, delineate, and understand a problem that goes beyond the scope of the sample itself, which however points towards larger concerns that require further investigation. The work of ongoing whistleblowing initiatives 4 Such as Academ-AI, https://www.academ-ai.info/ , and Retraction Watch, https://retractionwatch.com/papers-and-peer-reviews-with-evidence-of-chatgpt-writing/ . , recent media reports of journal closures (Subbaraman, 2024), or GPT-related changes in word use and writing style (Cabanac et al., 2021; Stokel-Walker, 2024) suggest that we only see the tip of the iceberg. There are already more sophisticated cases (Dadkhah et al., 2023) as well as cases involving fabricated images (Gu et al., 2022). Our analysis shows that questionable and potentially manipulative GPT-fabricated papers permeate the research infrastructure and are likely to become a widespread phenomenon. Our findings underline that the risk of fake scientific papers being used to maliciously manipulate evidence (see Dadkhah et al., 2017) must be taken seriously. Manipulation may involve undeclared automatic summaries of texts, inclusion in literature reviews, explicit scientific claims, or the concealment of errors in studies so that they are difficult to detect in peer review. However, the mere possibility of these things happening is a significant risk in its own right that can be strategically exploited and will have ramifications for trust in and perception of science. Society’s methods of evaluating sources and the foundations of media and information literacy are under threat and public trust in science is at risk of further erosion, with far-reaching consequences for society in dealing with information disorders. To address this multifaceted problem, we first need to understand why it exists and proliferates.

Finding 1: 139 GPT-fabricated, questionable papers were found and listed as regular results on the Google Scholar results page. Non-indexed journals dominate.

Most questionable papers we found were in non-indexed journals or were working papers, but we did also find some in established journals, publications, conferences, and repositories. We found a total of 139 papers with a suspected deceptive use of ChatGPT or similar LLM applications (see Table 1). Out of these, 19 were in indexed journals, 89 were in non-indexed journals, 19 were student papers found in university databases, and 12 were working papers (mostly in preprint databases). Table 1 divides these papers into categories. Health and environment papers made up around 34% (47) of the sample. Of these, 66% were present in non-indexed journals.

Finding 2: GPT-fabricated, questionable papers are disseminated online, permeating the research infrastructure for scholarly communication, often in multiple copies. Applied topics with practical implications dominate.

The 20 papers concerning health-related issues are distributed across 20 unique domains, accounting for 46 URLs. The 27 papers dealing with environmental issues can be found across 26 unique domains, accounting for 56 URLs.  Most of the identified papers exist in multiple copies and have already spread to several archives, repositories, and social media. It would be difficult, or impossible, to remove them from the scientific record.

As apparent from Table 2, GPT-fabricated, questionable papers are seeping into most parts of the online research infrastructure for scholarly communication. Platforms on which identified papers have appeared include ResearchGate, ORCiD, Journal of Population Therapeutics and Clinical Pharmacology (JPTCP), Easychair, Frontiers, the Institute of Electrical and Electronics Engineer (IEEE), and X/Twitter. Thus, even if they are retracted from their original source, it will prove very difficult to track, remove, or even just mark them up on other platforms. Moreover, unless regulated, Google Scholar will enable their continued and most likely unlabeled discoverability.

A word rain visualization (Centre for Digital Humanities Uppsala, 2023), which combines word prominences through TF-IDF 5 Term frequency–inverse document frequency , a method for measuring the significance of a word in a document compared to its frequency across all documents in a collection. scores with semantic similarity of the full texts of our sample of GPT-generated articles that fall into the “Environment” and “Health” categories, reflects the two categories in question. However, as can be seen in Figure 1, it also reveals overlap and sub-areas. The y-axis shows word prominences through word positions and font sizes, while the x-axis indicates semantic similarity. In addition to a certain amount of overlap, this reveals sub-areas, which are best described as two distinct events within the word rain. The event on the left bundles terms related to the development and management of health and healthcare with “challenges,” “impact,” and “potential of artificial intelligence”emerging as semantically related terms. Terms related to research infrastructures, environmental, epistemic, and technological concepts are arranged further down in the same event (e.g., “system,” “climate,” “understanding,” “knowledge,” “learning,” “education,” “sustainable”). A second distinct event further to the right bundles terms associated with fish farming and aquatic medicinal plants, highlighting the presence of an aquaculture cluster.  Here, the prominence of groups of terms such as “used,” “model,” “-based,” and “traditional” suggests the presence of applied research on these topics. The two events making up the word rain visualization, are linked by a less dominant but overlapping cluster of terms related to “energy” and “water.”

The bar chart of the terms in the paper subset (see Figure 2) complements the word rain visualization by depicting the most prominent terms in the full texts along the y-axis. Here, word prominences across health and environment papers are arranged descendingly, where values outside parentheses are TF-IDF values (relative frequencies) and values inside parentheses are raw term frequencies (absolute frequencies).

Finding 3: Google Scholar presents results from quality-controlled and non-controlled citation databases on the same interface, providing unfiltered access to GPT-fabricated questionable papers.

Google Scholar’s central position in the publicly accessible scholarly communication infrastructure, as well as its lack of standards, transparency, and accountability in terms of inclusion criteria, has potentially serious implications for public trust in science. This is likely to exacerbate the already-known potential to exploit Google Scholar for evidence hacking (Tripodi et al., 2023) and will have implications for any attempts to retract or remove fraudulent papers from their original publication venues. Any solution must consider the entirety of the research infrastructure for scholarly communication and the interplay of different actors, interests, and incentives.

We searched and scraped Google Scholar using the Python library Scholarly (Cholewiak et al., 2023) for papers that included specific phrases known to be common responses from ChatGPT and similar applications with the same underlying model (GPT3.5 or GPT4): “as of my last knowledge update” and/or “I don’t have access to real-time data” (see Appendix A). This facilitated the identification of papers that likely used generative AI to produce text, resulting in 227 retrieved papers. The papers’ bibliographic information was automatically added to a spreadsheet and downloaded into Zotero. 6 An open-source reference manager, https://zotero.org .

We employed multiple coding (Barbour, 2001) to classify the papers based on their content. First, we jointly assessed whether the paper was suspected of fraudulent use of ChatGPT (or similar) based on how the text was integrated into the papers and whether the paper was presented as original research output or the AI tool’s role was acknowledged. Second, in analyzing the content of the papers, we continued the multiple coding by classifying the fraudulent papers into four categories identified during an initial round of analysis—health, environment, computing, and others—and then determining which subjects were most affected by this issue (see Table 1). Out of the 227 retrieved papers, 88 papers were written with legitimate and/or declared use of GPTs (i.e., false positives, which were excluded from further analysis), and 139 papers were written with undeclared and/or fraudulent use (i.e., true positives, which were included in further analysis). The multiple coding was conducted jointly by all authors of the present article, who collaboratively coded and cross-checked each other’s interpretation of the data simultaneously in a shared spreadsheet file. This was done to single out coding discrepancies and settle coding disagreements, which in turn ensured methodological thoroughness and analytical consensus (see Barbour, 2001). Redoing the category coding later based on our established coding schedule, we achieved an intercoder reliability (Cohen’s kappa) of 0.806 after eradicating obvious differences.

The ranking algorithm of Google Scholar prioritizes highly cited and older publications (Martín-Martín et al., 2016). Therefore, the position of the articles on the search engine results pages was not particularly informative, considering the relatively small number of results in combination with the recency of the publications. Only the query “as of my last knowledge update” had more than two search engine result pages. On those, questionable articles with undeclared use of GPTs were evenly distributed across all result pages (min: 4, max: 9, mode: 8), with the proportion of undeclared use being slightly higher on average on later search result pages.

To understand how the papers making fraudulent use of generative AI were disseminated online, we programmatically searched for the paper titles (with exact string matching) in Google Search from our local IP address (see Appendix B) using the googlesearch – python library(Vikramaditya, 2020). We manually verified each search result to filter out false positives—results that were not related to the paper—and then compiled the most prominent URLs by field. This enabled the identification of other platforms through which the papers had been spread. We did not, however, investigate whether copies had spread into SciHub or other shadow libraries, or if they were referenced in Wikipedia.

We used descriptive statistics to count the prevalence of the number of GPT-fabricated papers across topics and venues and top domains by subject. The pandas software library for the Python programming language (The pandas development team, 2024) was used for this part of the analysis. Based on the multiple coding, paper occurrences were counted in relation to their categories, divided into indexed journals, non-indexed journals, student papers, and working papers. The schemes, subdomains, and subdirectories of the URL strings were filtered out while top-level domains and second-level domains were kept, which led to normalizing domain names. This, in turn, allowed the counting of domain frequencies in the environment and health categories. To distinguish word prominences and meanings in the environment and health-related GPT-fabricated questionable papers, a semantically-aware word cloud visualization was produced through the use of a word rain (Centre for Digital Humanities Uppsala, 2023) for full-text versions of the papers. Font size and y-axis positions indicate word prominences through TF-IDF scores for the environment and health papers (also visualized in a separate bar chart with raw term frequencies in parentheses), and words are positioned along the x-axis to reflect semantic similarity (Skeppstedt et al., 2024), with an English Word2vec skip gram model space (Fares et al., 2017). An English stop word list was used, along with a manually produced list including terms such as “https,” “volume,” or “years.”

• Artificial Intelligence
• / Search engines

Cite this Essay

Haider, J., Söderström, K. R., Ekström, B., & Rödl, M. (2024). GPT-fabricated scientific papers on Google Scholar: Key features, spread, and implications for preempting evidence manipulation. Harvard Kennedy School (HKS) Misinformation Review . https://doi.org/10.37016/mr-2020-156

• / Appendix B

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This research has been supported by Mistra, the Swedish Foundation for Strategic Environmental Research, through the research program Mistra Environmental Communication (Haider, Ekström, Rödl) and the Marcus and Amalia Wallenberg Foundation [2020.0004] (Söderström).

Competing Interests

The authors declare no competing interests.

The research described in this article was carried out under Swedish legislation. According to the relevant EU and Swedish legislation (2003:460) on the ethical review of research involving humans (“Ethical Review Act”), the research reported on here is not subject to authorization by the Swedish Ethical Review Authority (“etikprövningsmyndigheten”) (SRC, 2017).

This is an open access article distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided that the original author and source are properly credited.

Data Availability

All data needed to replicate this study are available at the Harvard Dataverse: https://doi.org/10.7910/DVN/WUVD8X

Acknowledgements

The authors wish to thank two anonymous reviewers for their valuable comments on the article manuscript as well as the editorial group of Harvard Kennedy School (HKS) Misinformation Review for their thoughtful feedback and input.

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MLA General Format 

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MLA Style specifies guidelines for formatting manuscripts and citing research in writing. MLA Style also provides writers with a system for referencing their sources through parenthetical citation in their essays and Works Cited pages. 

Writers who properly use MLA also build their credibility by demonstrating accountability to their source material. Most importantly, the use of MLA style can protect writers from accusations of plagiarism, which is the purposeful or accidental uncredited use of source material produced by other writers. 

If you are asked to use MLA format, be sure to consult the  MLA Handbook  (9th edition). Publishing scholars and graduate students should also consult the  MLA Style Manual and Guide to Scholarly Publishing  (3rd edition). The  MLA Handbook  is available in most writing centers and reference libraries. It is also widely available in bookstores, libraries, and at the MLA web site. See the Additional Resources section of this page for a list of helpful books and sites about using MLA Style.

Paper Format

The preparation of papers and manuscripts in MLA Style is covered in part four of the  MLA Style Manual . Below are some basic guidelines for formatting a paper in  MLA Style :

General Guidelines

• Type your paper on a computer and print it out on standard, white 8.5 x 11-inch paper.
• Double-space the text of your paper and use a legible font (e.g. Times New Roman). Whatever font you choose, MLA recommends that the regular and italics type styles contrast enough that they are each distinct from one another. The font size should be 12 pt.
• Leave only one space after periods or other punctuation marks (unless otherwise prompted by your instructor).
• Set the margins of your document to 1 inch on all sides.
• Indent the first line of each paragraph one half-inch from the left margin. MLA recommends that you use the “Tab” key as opposed to pushing the space bar five times.
• Create a header that numbers all pages consecutively in the upper right-hand corner, one-half inch from the top and flush with the right margin. (Note: Your instructor may ask that you omit the number on your first page. Always follow your instructor's guidelines.)
• Use italics throughout your essay to indicate the titles of longer works and, only when absolutely necessary, provide emphasis.
• If you have any endnotes, include them on a separate page before your Works Cited page. Entitle the section Notes (centered, unformatted).

Formatting the First Page of Your Paper

• Do not make a title page for your paper unless specifically requested or the paper is assigned as a group project. In the case of a group project, list all names of the contributors, giving each name its own line in the header, followed by the remaining MLA header requirements as described below. Format the remainder of the page as requested by the instructor.
• In the upper left-hand corner of the first page, list your name, your instructor's name, the course, and the date. Again, be sure to use double-spaced text.
• Double space again and center the title. Do not underline, italicize, or place your title in quotation marks. Write the title in Title Case (standard capitalization), not in all capital letters.
• Use quotation marks and/or italics when referring to other works in your title, just as you would in your text. For example:  Fear and Loathing in Las Vegas  as Morality Play; Human Weariness in "After Apple Picking"
• Double space between the title and the first line of the text.
• Create a header in the upper right-hand corner that includes your last name, followed by a space with a page number. Number all pages consecutively with Arabic numerals (1, 2, 3, 4, etc.), one-half inch from the top and flush with the right margin. (Note: Your instructor or other readers may ask that you omit the last name/page number header on your first page. Always follow instructor guidelines.)

Here is a sample of the first page of a paper in MLA style:

The First Page of an MLA Paper

Section Headings

Writers sometimes use section headings to improve a document’s readability. These sections may include individual chapters or other named parts of a book or essay.

MLA recommends that when dividing an essay into sections you number those sections with an Arabic number and a period followed by a space and the section name.

MLA does not have a prescribed system of headings for books (for more information on headings, please see page 146 in the MLA Style Manual and Guide to Scholarly Publishing , 3rd edition). If you are only using one level of headings, meaning that all of the sections are distinct and parallel and have no additional sections that fit within them, MLA recommends that these sections resemble one another grammatically. For instance, if your headings are typically short phrases, make all of the headings short phrases (and not, for example, full sentences). Otherwise, the formatting is up to you. It should, however, be consistent throughout the document.

If you employ multiple levels of headings (some of your sections have sections within sections), you may want to provide a key of your chosen level headings and their formatting to your instructor or editor.

Sample Section Headings

The following sample headings are meant to be used only as a reference. You may employ whatever system of formatting that works best for you so long as it remains consistent throughout the document.

Formatted, unnumbered:

Level 1 Heading: bold, flush left

Level 2 Heading: italics, flush left

Level 3 Heading: centered, bold

Level 4 Heading: centered, italics

Level 5 Heading: underlined, flush left