Learning citing a book in apa with two authors, or how to cite 2 authors in text APA is one of the most common formatting questions students face, because the American Psychological Association’s style has specific rules that change depending on whether you are writing a narrative citation or a parenthetical one. This guide explains how to cite a book in APA with two authors, both in the text and in the reference list, with clear examples you can copy and adapt, based on the current APA Publication Manual (7th edition).
Citing a Book in APA With Two Authors: The Basics
When citing a book in APA with two authors, the core rule is simple: name both authors every time you cite the work in the text. Unlike works with three or more authors, where APA 7th edition uses “et al.” after the first citation, two-author works always name both authors. This applies to both narrative citations, where the authors’ names appear as part of your sentence, and parenthetical citations, where they appear inside brackets at the end of a clause.
The two formats differ in one small but important detail. In a narrative citation, you use the word “and” between the authors’ names: Smith and Jones (2020) argued that… In a parenthetical citation, you use an ampersand: (Smith & Jones, 2020). Mixing these up is one of the most frequent APA errors, and it is easy to avoid once you know the rule: “and” in the sentence, “&” in the brackets. The year always follows the authors’ names, either in brackets after the names in a narrative citation or inside the brackets in a parenthetical citation.
Narrative Versus Parenthetical Citations
A narrative citation weaves the authors into your sentence. For example: “According to Smith and Jones (2020), classroom discussion improves retention.” This format is useful when you want to emphasise the authors or when you are discussing their work at length. A parenthetical citation places the source at the end of a claim: “Classroom discussion improves retention (Smith & Jones, 2020).” This format is useful when the claim matters more than the authors, or when you are citing several sources together.
Both formats are correct, and good academic writing mixes them for variety. The key is consistency within each format: always “and” in narrative citations, always “&” in parenthetical citations, and always both authors for a two-author work. If you cite the same work several times in a paragraph, APA allows you to omit the year after the first narrative citation in that paragraph, though many students find it simpler and safer to include the year every time.
Page Numbers and Quotations
When you quote directly from a two-author book, you must include a page number (or another locator, such as a chapter number for unpaginated sources). In a narrative citation, the page number goes in brackets after the quotation: Smith and Jones (2020) claimed that “discussion transforms passive listening into active learning” (p. 47). In a parenthetical citation, everything goes inside one set of brackets: “Discussion transforms passive listening into active learning” (Smith & Jones, 2020, p. 47).
For paraphrases, page numbers are not required by APA, but they are encouraged when they help the reader locate the passage, particularly for long or complex books. Including a page number for a paraphrase is never wrong, and it demonstrates careful scholarship. If you are citing a specific idea that appears in a particular chapter, a chapter reference can serve as a locator when page numbers are unavailable, as with some e-books.
| Citation type | Format | Example |
|---|---|---|
| Narrative, paraphrase | Author and Author (Year) | Smith and Jones (2020) argued that discussion improves retention. |
| Parenthetical, paraphrase | (Author & Author, Year) | Discussion improves retention (Smith & Jones, 2020). |
| Narrative, quotation | Author and Author (Year) … (p. xx) | Smith and Jones (2020) wrote that “discussion transforms learning” (p. 47). |
| Parenthetical, quotation | (Author & Author, Year, p. xx) | “Discussion transforms learning” (Smith & Jones, 2020, p. 47). |
Citing a Book in APA With Two Authors: The Reference List Entry
The reference list entry for a two-author book follows a standard pattern: authors’ surnames and initials, year in brackets, book title in italics and sentence case, and publisher. For example: Smith, A. B., & Jones, C. D. (2020). Learning through discussion. Academic Press. Note the details: surnames first, initials after, an ampersand before the final author, a full stop after the year, the title in italics with only the first word and proper nouns capitalised, and the publisher without a location, which APA 7th edition no longer requires.
For an edited book, the pattern changes slightly: the editors’ names are followed by “(Eds.)” in brackets. For a chapter in an edited book, you cite the chapter authors and the book editors, with the chapter title in plain text and the book title in italics, plus the page range. For an e-book, the reference is usually the same as for the print book, unless the e-book has a DOI, in which case the DOI is added at the end. These variations follow the same logic: give the reader everything needed to find the source.
Common Mistakes to Avoid
Several mistakes recur in two-author citations. Using “et al.” for two authors is wrong in APA 7th edition; “et al.” begins with three authors. Using “and” inside a parenthetical citation, or “&” in a narrative citation, is wrong, though it is a minor error. Omitting the second author after the first citation is wrong for two-author works, even though it is correct for works with more authors. Reversing the authors’ order is also wrong: always preserve the order given on the book’s title page, which reflects the authors’ agreed credit.
Another common mistake is inconsistency between in-text citations and the reference list. Every in-text citation must have a matching reference entry, and every reference entry must be cited in the text, with matching spellings and years. A mismatch in either direction signals carelessness to a marker and can cost marks. Before submitting, cross-check each in-text citation against the reference list, and check that author names, years, and titles match exactly.
Citing Two Authors in Special Cases
Some situations need extra care. If you cite two different works by the same two authors in the same year, add lowercase letters to the years to distinguish them: (Smith & Jones, 2020a) and (Smith & Jones, 2020b), with matching letters in the reference list. If two different author pairs share a surname and year, include initials in the in-text citation to distinguish them: (A. Smith & Jones, 2020) versus (B. Smith & Lee, 2020). If a work has two authors with the same surname, include both initials even when the years differ, to avoid confusion.
Secondary citations, where you cite a work discussed in another source, should be used sparingly. The format is: (Smith & Jones, 2020, as cited in Brown, 2022), with only the secondary source, Brown, appearing in the reference list. APA encourages finding and citing the original source where possible, and secondary citations should be a last resort rather than a habit.
Using Citation Tools
Citation tools and reference managers can generate two-author citations automatically, but they should be checked, not trusted blindly. Tools sometimes import author names incorrectly, mishandle capitalisation, or use an outdated APA edition. A quick manual check against the rules in this guide, both authors named, “and” versus “&” correct, year and page numbers in place, catches most errors.
Reference managers are most valuable for long projects, where they keep the reference list consistent and update in-text citations when sources change. For short essays, manual citation is often faster and teaches the rules more effectively. Either way, the responsibility for accuracy remains with the writer, and markers notice when citations are careless.
Frequently Asked Questions
Do I use “et al.” for two authors in APA?
No. In APA 7th edition, two-author works always name both authors in every in-text citation. “Et al.” is used for works with three or more authors.
Do I use “and” or “&” between two authors?
Use “and” in narrative citations (Smith and Jones, 2020) and “&” in parenthetical citations (Smith & Jones, 2020).
Do I include the year every time I cite a two-author work?
Yes, in parenthetical citations always. In narrative citations, APA allows omitting the year after the first citation within a paragraph, but including it every time is safe.
How do I list two authors in the reference list?
Surname, initials, ampersand, surname, initials, year in brackets, italicised title in sentence case, publisher. Example: Smith, A. B., & Jones, C. D. (2020). Learning through discussion. Academic Press.
Conclusion
Knowing how to cite 2 authors in text APA comes down to a few clear rules: name both authors every time, use “and” in narrative citations and “&” in parenthetical ones, include page numbers for quotations, and match every in-text citation to a correct reference entry. These rules are simple, but they are also easy to get wrong under deadline pressure, so keeping a template of the four formats in this guide will save time and marks. For more on academic writing, see our guides on in-text citation and academic terms.
