Q. “How do you feel about lastly?”
Q. “Under what circumstances can one put a comma after so?”
Q. “It’s up to You. The question is whether to capitalize up.”
Chicago style is named for The Chicago Manual of Style, a reference book for writers and editors first published by the University of Chicago Press in 1906 and now in its 17th edition.
In the 1930s, the Press published Kate Turabian’s Manual for Writers of Research Papers, Theses, and Dissertations, often called simply “Turabian,” and soon to be in its 9th edition.
Both books are official sources for Chicago style and are internationally recognized for their authority. Take a look at the tables of contents of CMOS and Turabian to see at a glance the issues that each book covers.