16.3.5.2 Citations and Comments. (from Turabian 9th Edition)
If a note includes both a citation and a substantive comment, put the citation first with a period after it, followed by the comment in a separate sentence.
To come to Paris was to experience the simultaneous pleasures of the best contemporary art and the most vibrant art center.1
N:
1. Natt, “Paris Art Schools,” 269. Gilded Age American artists traveled to other European art centers, most notably Munich, but Paris surpassed all others in size and importance.
When you include a quotation in a note, put the citation after the terminal punctuation of the quotation.
Property qualifications dropped out of US practice for petit juries gradually during the nineteenth century but remained in force for grand juries in some jurisdictions until the mid-twentieth century.2
N:
2. “A grand jury inquires into complaints and accusations brought before it and, based on evidence presented by the state, issues bills of indictment.” Kermit Hall, The Magic Mirror: Law in American History (New York: Oxford University Press, 1989), 172.
Be judicious in your use of substantive comments in notes. If a point is critical to your argument, include it in the text. If it is peripheral, think carefully about whether it is important enough to mention in a note.
Source:
Turabian, Kate L.. A Manual for Writers of Research Papers, Theses, and Dissertations, Ninth Edition (Chicago Guides to Writing, Editing, and Publishing) (p. 163). University of Chicago Press. Kindle Edition.