Learning chicago style intext citation rules is much easier when you work through real, worked examples rather than memorising abstract rules. Chicago style offers two systems, and the author-date system is the one most commonly used for in-text citations in the sciences and social sciences. In author-date style, a brief citation in parentheses appears in the body of your writing, and a full reference appears in a reference list at the end. This guide to chicago style intext citation focuses on worked examples: you will see exactly how a citation looks inside a sentence, how it changes for different numbers of authors, and how to cite pages, chapters, and sources without page numbers.
The basic pattern for a chicago style intext citation in author-date style is simple: the author’s surname, the year of publication, and, when relevant, the page number, all inside parentheses. For example, a sentence about urban history might end with a citation such as (Smith 2020, 45). The reference list entry at the end of the paper then gives the full details: author, year, title, place of publication, and publisher. Once you understand that two-part structure, most other citation forms become variations on the same idea, with small adjustments for multiple authors, organisations, and edited works.
Chicago Style Intext Citation: The Basic Example
Consider a straightforward example. Suppose you are writing about public libraries and you want to refer to a book by a single author published in 2019. A narrative citation, where the author is named in the sentence itself, looks like this: “According to Johnson (2019, 112), public libraries adapted quickly to digital lending.” A parenthetical citation, where all the information goes in brackets at the end of the sentence, looks like this: “Public libraries adapted quickly to digital lending (Johnson 2019, 112).” Both forms are correct in Chicago author-date style, and the choice depends on your sentence structure rather than on a fixed rule.
Notice the punctuation details in these examples, because they matter for consistency. In a parenthetical citation, there is no comma between the author and the year, but there is a comma before the page number. The full stop for the sentence goes after the closing parenthesis in a parenthetical citation, while in a narrative citation the year and page remain inside parentheses immediately after the author’s name. Keeping these small details consistent throughout a paper signals care and makes your writing easier for readers and markers to follow.
Another basic example involves a journal article rather than a book. The in-text form is identical: author, year, and page. For instance, “Recent studies confirm the trend (Patel 2021, 78).” The difference appears only in the reference list, where a journal article entry includes the journal title, volume, issue, and page range, while a book entry includes the publisher and place of publication. For in-text purposes, however, you do not need to remember those differences; the parenthetical form stays the same, which is one reason author-date style is popular with student writers.
Chicago Style Intext Citation for Two and Three Authors
When a source has two authors, include both surnames in the in-text citation, joined by “and” in a narrative citation and by “and” in a parenthetical citation as well. For example: “Garcia and Lee (2022, 34) argue that community archives preserve local memory.” The parenthetical version reads: “Community archives preserve local memory (Garcia and Lee 2022, 34).” Do not use an ampersand in Chicago author-date citations, and do not shorten two-author citations to the first author alone, because both authors deserve credit in every citation.
For three authors, Chicago author-date style lists all three surnames in the first citation, and then shortens later citations to the first author’s surname followed by “et al.” For example, the first citation might read: “Initial research found mixed results (Brown, Wilson, and Taylor 2018, 90).” Later citations to the same work would read: “Later studies confirmed the pattern (Brown et al. 2018, 95).” This rule balances completeness with readability: readers see the full author list once, and subsequent citations stay concise without losing track of the source.
For four or more authors, use the first author’s surname followed by “et al.” from the very first citation. For example: “The survey results were consistent across regions (Anderson et al. 2023, 12).” The reference list entry, by contrast, still lists all authors up to a certain limit, following Chicago’s reference-list rules. The key point for in-text writing is that “et al.” is a shortening device for the body text, not a reason to omit authors from the reference list. Practise this form until your chicago style intext citation feels automatic.
Chicago Style Intext Citation for Organisations and Missing Authors
Some sources are published by organisations rather than by individual authors. In that case, use the organisation’s name as the author in the in-text citation. For example: “National survey data show a steady increase (World Health Organisation 2020, 5).” If the organisation name is long and appears frequently, you may introduce an abbreviation in the first citation and use the abbreviation thereafter, provided you explain the abbreviation clearly. For instance, after a first citation giving the full name, later citations can use the shortened form, as long as readers can still identify the source in the reference list. That pattern is central to a correct chicago style intext citation.
When a source has no identified author, use a shortened version of the title in place of the author name. For example, a report with no personal author might be cited as (“Annual Review of Urban Policy” 2019, 22). The title is placed in quotation marks for an article or chapter, and in italics for a book, following the same title rules used elsewhere in Chicago style. If no publication year is available, use “n.d.” in place of the year, which stands for “no date”. For example: “The guide offers practical advice (Community Handbook, n.d., 8).” Keep that wording consistent in every chicago style intext citation you write.
Sources without page numbers, such as web pages, require a different locator. Instead of a page number, you may cite a section heading, a paragraph number, or another stable locator, or you may omit the locator if the source is short. For example: “The policy summary emphasises transparency (Open Data Initiative 2022, under “Key Principles”).” The aim is always the same: give readers enough information to find the exact passage you are referring to, without inventing a page number that does not exist. This is exactly how a chicago style intext citation should read in context.
Chicago Style Intext Citation for Quotations and Paraphrases
Both quotations and paraphrases need citations in Chicago author-date style, but the details differ slightly. A direct quotation must include a page number or equivalent locator, because readers need to verify the exact wording. For example: “As one historian puts it, “the city changed in a single decade” (Roberts 2017, 203).” A paraphrase, where you restate an idea in your own words, should also be cited, but a page number is recommended rather than strictly required when you are summarising a general argument. For example: “Roberts (2017) traces the city’s transformation across a decade of rapid growth.” Practise this form until your chicago style intext citation feels automatic.
Long quotations, typically those over one hundred words in Chicago style, are set as block quotations rather than run into the paragraph. A block quotation is indented, presented without quotation marks, and followed by a citation after the final punctuation. Short quotations, by contrast, stay inside the paragraph with quotation marks and a citation immediately after the quoted material. Learning to distinguish these two forms prevents formatting errors that can distract readers from your argument, even when the citation itself is correct. That pattern is central to a correct chicago style intext citation.
Secondary citations, where you cite a source you found quoted in another work, should be used sparingly. Chicago style prefers that you consult the original source directly. If that is impossible, cite both works in the text, for example: “As quoted in Miller (2020, 44), early researchers noted the effect (original study by Davies 1998).” The reference list then includes only the work you actually consulted. This approach is honest about your sources and avoids giving the impression that you read a work you only encountered second-hand. Keep that wording consistent in every chicago style intext citation you write.
| Source type | First in-text example | Later citations |
|---|---|---|
| One author | (Johnson 2019, 112) | Same form each time |
| Two authors | (Garcia and Lee 2022, 34) | Both names each time |
| Three authors | (Brown, Wilson, and Taylor 2018, 90) | (Brown et al. 2018, 95) |
| Four or more authors | (Anderson et al. 2023, 12) | Same shortened form |
| Organisation | (World Health Organisation 2020, 5) | Same, or abbreviation if introduced |
| No date | (Community Handbook, n.d., 8) | Same form each time |
Chicago Style Intext Citation in a Sample Paragraph
Seeing citations inside a full paragraph helps more than isolated examples alone. Consider this sample paragraph, which uses fictional source names for illustration: “Public libraries have long served as community hubs, and recent research confirms their expanding role (Johnson 2019, 112). Garcia and Lee (2022, 34) argue that community archives, often housed within libraries, preserve local memory in ways that digital collections alone cannot. Later studies support this view, finding consistent patterns across regions (Anderson et al. 2023, 12). Together, these findings suggest that libraries matter not only as lending services but as institutions that shape how communities remember themselves.” This is exactly how a chicago style intext citation should read in context.
Notice how the sample paragraph mixes narrative and parenthetical citations, which keeps the prose varied and readable. It also shows that a citation belongs wherever a claim depends on a source, not only at the end of a paragraph. If a paragraph contains several distinct claims from different sources, each claim should carry its own citation, so readers can trace each idea back to its origin. A single citation at the end of a long paragraph is not sufficient when the paragraph draws on multiple works. Practise this form until your chicago style intext citation feels automatic.
For more general writing help, see our internal guides on writing tips from published authors and citation examples for two authors in another style. Comparing styles can clarify what is distinctive about Chicago author-date citations, especially the absence of a comma between author and year and the use of “and” rather than an ampersand for multiple authors.
Frequently Asked Questions
Is this guide about author-date or notes style?
This guide covers Chicago author-date style, which uses parenthetical in-text citations and a reference list. Chicago also offers a notes and bibliography system using footnotes, which follows different formatting rules.
Is there a comma between the author and the year?
No. In Chicago author-date parenthetical citations, write the author and year without a comma between them, then add a comma before the page number, as in (Johnson 2019, 112).
How do I cite three authors after the first citation?
List all three surnames in the first citation, then shorten later citations to the first author’s surname plus “et al.”, as in (Brown et al. 2018, 95).
What if the source has no page number?
Use another stable locator, such as a section heading or paragraph number, or omit the locator for a short source, rather than inventing a page number.
Conclusion
Mastering chicago style intext citation becomes straightforward once you practise with worked examples. Start with the basic pattern of author, year, and page, then learn the variations for two authors, three authors, larger author groups, organisations, and sources without authors or dates. Mix narrative and parenthetical citations to keep your prose readable, cite both quotations and paraphrases, and give a page number or equivalent locator for direct quotations. With those habits, your Chicago author-date citations will be accurate, consistent, and easy for readers to follow, and your reference list will complete the picture by giving the full details for every source you cite in the text. That pattern is central to a correct chicago style intext citation.