The Chicago Manual of Style. 15th ed. Chicago: University of Chicago Press, 2003.
The Chicago Manual of Style, 15th ed. (Chicago: University of Chicago Press, 2003).
Above we see the correct citation form for (1) your bibliography and (2) for a footnote in Chicago style.
Many disciplines use Chicago style, but you should always ask your professor which citation style he or she prefers. There are online style guides on the library web site, as well as copies of The Chicago Manual of Style at the Reference Desk.
The 15th ed. has 956 pages and covers details of every aspect of creating and editing a professional document. This guide hits only a few basic rules to get you started with your bibliography and footnotes. For more details, please consult a librarian.