Author-Date citation refers to a style of citing that uses...
Author-Date citation styles allow you to highlight both the source of your information and its date/currency in the text of your writing, while emphasizing the date/currency in your list of references.
While many Author-Date citation styles exist, the most commonly used are Chicago Author-Date Style and American Psychological Association (APA) Style.
APA Style | Chicago Author-Date Style |
---|---|
Author's first and middle names are abbreviated | Author's first and middle names are spelled out (or not) depending on how they are listed in the publication |
Titles (except journals) are written in sentence case (only first words and proper nouns are capitalized). Titles of journals are in title case. |
Titles are written in title case (all words 4+ letters are capitalized) |
Titles of chapters, articles, and pages are written in plain text with no punctuation. Titles of books and journals are in italics. | Titles of chapters, articles, and pages are written in plain text in quotation marks. Titles of books and journals are in italics. |
Multiple author names are separated with & | Multiple author names are separated with and |
Date in reference list is punctuated with () | Date in reference list is punctuated with . . |
Example: (Aycock, 2021, 1601) Aycock, J. (2021). The coming tsunami of digital |
Example: (Aycock 2021, 1601) Aycock, John. 2021. “The Coming Tsunami of Digital |
Chicago Author-Date Style
There are two versions of Chicago Style citation. Classicists often use Author-Date Style.
Author-Date differs from the other kind of Chicago Style in two main ways:
Note that online citation tools will almost always give you the Notes-Bibliography version of Chicago rather than the Author-Date style. So, check carefully!
Book with a single author or editor*
*For ebooks, add a DOI, permanent link or database at the end.
In your writing:
(Lastname date, page)
(Seider 2013, 10)
In your bibliography:
Lastname, Firstname Middle. Date. Title of Book. Publisher.
Seider, Aaron M. 2013. Memory in Vergil's Aeneid: Creating the Past. Cambridge University Press.
Chapter from an edited book
In your writing:
(Chapter author lastname date, page)
(Knott 2024, 20)
In your bibliography:
Chapter author lastname, Firstname Middle. Date. "Title of Chapter." In Title of Book, edited by Editor1 Firstname Lastname and Editor2 Firstname Lastname. Publisher.
Knott, Elizabeth. 2024. " "Digitization as Interpretation: Cautions for Archival Archaeology from Artefact Photography." In Trends in Archive Archaeology: Current Research on Archival Material from Fieldwork and its Implications for Archaeological Practice, edited by Jon Frey and Rubina Raja. Brepols.
Online journal article (w/ month or season given)
In your writing:
(Lastname date, page)
(Chin 2017, 480)
In your bibliography:
Lastname, Firstname Middle. Date. "Title of Article." Title of Journal Volume, no. Issue (month/season): pages. DOI/stable URL/database.
Chin, Catherine. 2017. "Marvelous Things Heard: On Finding Historical Radiance." The Massachusetts Review 58, no. 3 (Fall): 478-491. https://www.jstor.org/stable/44808283.
Online journal article (w/ no month or season given)
In your writing:
(Lastname date, page)
(Candelora 2017, 46)
In your bibliography:
Lastname, Firstname Middle. Date. "Title of Article." Title of Journal Volume (issue): pages. DOI/stable URL/database.
Candelora, Daniella. 2018. "Entangled in Orientalism: How the Hyksos Became a Race." Journal of Egyptian History 11(1-2): 45-72. Historical Abstracts.
The Chicago Manual of Style was updated in September 2024!
While most changes won't affect your research or citation, there are a few things that will. The biggest change is that we no longer list the city of publication for books when we cite them in our bibliography.
If you are looking at Chicago Style resources or using a citation tool, make sure it's been updated to the newest version of Chicago Style (or ask Jennifer for help!). All of the resources listed here are based on the newest version, which is the 18th edition.
Guide to writing and citing in Chicago Style.
APA Style
APA Style is significantly more abbreviated than other citation styles. Here are some of the key characteristics that tend to trip folks up!
Note that online citation tools are inconsistent when it comes to handling proper APA capitalization. So, check carefully!
Book with a single author or editor*
*For ebooks, add a DOI or permanent link at the end.
In your writing:
(Lastname, date, page)
(Seider, 2013, 10)
In your bibliography:
Lastname, Firstinitial Middleinitial. (Date). Title of book. Publisher.
Seider, A.M. (2013). Memory in Vergil's Aeneid: Creating the past. Cambridge University Press.
Chapter from an edited book
In your writing:
(Chapter author, lastname, date, page)
(Knott, 2024, 20)
In your bibliography:
Chapter author lastname, Firstinitial Middleinitial. (Date). Title of chapter. In Editor1 Firstinitial Lastname & Editor2 First Initial Lastname (Eds.), Title of book, (pp. chapter pages). Publisher.
Knott, E. (2024). Digitization as interpretation: Cautions for archival archaeology from artefact photography. In J. Frey & R. Raja, Trends in archive archaeology: Current research on archival material from fieldwork and its implications for archaeological practice (pp. 19-42). Brepols.
Online journal article
In your writing:
(Lastname,date, page)
(Chin, 2017, 480)
In your bibliography:
Lastname, Firstinitial Middleinitial. (Date). Title of article. Title of Journal, Volume(Issue), pages. DOI/stable URL.
Chin, C. (2017). Marvelous things heard: On finding historical radiance." The Massachusetts Review 58(3), 478-491. https://www.jstor.org/stable/44808283.
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