There are two main types of Chicago Style source citations: 

• Author-Date - used primarily by Criminal Justice programs at Lynn University
• Notes and Bibliography - used primarily by Conservatory of Music courses at Lynn University

Please see your instructor for information about the citation style used in your courses.

From the Chicago-Style Citation Quick Guide:

The notes and bibliography system is preferred by many working in the humanities—including literature, history, and the arts. In this system, sources are cited in numbered footnotes or endnotes. Each note corresponds to a raised (superscript) number in the text. Sources are also usually listed in a separate bibliography. The notes and bibliography system can accommodate a wide variety of sources, including unusual ones that don’t fit neatly into the author-date system.

The author-date system is more common in the sciences and social sciences. In this system, sources are briefly cited in the text, usually in parentheses, by author’s last name and year of publication. Each in-text citation matches up with an entry in a reference list, where full bibliographic information is provided (University of Chicago Press, 2017).