The Chicago / Turabian Style has two systems for references and can be used for the humanities (literature, history, art) or the sciences.
- The first type is the Notes and Bibliography system, which uses footnotes or endnotes plus an alphabetical works cited page at the end of the document. This is generally used most for the humanities.
- The second type is the Author-Date system, which requires in-text references of the author's last name, publication year, and page(s) you are citing. You must also include an alphabetical list of references at the end of your paper that provides complete entries of the parenthetical references you made within the paper. The Author-Date system is mostly used in the sciences.
This information is based on UC Berkeley Library's Guide.