The Chicago Manual of Style offers two distinct documentation methods, one for the humanities (Notes and Bibliography system) and one for the sciences (Author-Date system). This guide presumes you're using the Notes & Bibliography format, as is common for Lone Star College classes.
1. Barbara Erhlich White, "Renoir's Trip to Italy," Art Bulletin 51, no. 4 (1969): 341, http://www.jstor.org/stable/3048651
4. White, "Renoir's Trip," 347.
White, Barbara Ehrlich. "Renoir's Trip to Italy." Art Bulletin 51, no. 4 (1969): 333-51. http://www.jstor.org/stable/3048651.
The second (or subsequent) time a resource is referenced, use a shortened form of the citation. The short form should include the last name of the author, a brief form of the title (formatted with italics or quotation marks as needed), and the page number. For example:
95. Miller, Quest, 81.
Note: Older versions of Chicago used Ibid. for consecutive references to the same source. This is no longer preferred, as of the 17th edition. You will use shortened notes for all footnote citations after your initial use of a source.