Visit the 2nd floor of the library to find a print copy of the Chicago Manual of Style:
If you need help getting started with Chicago Manual of Style, try this interactive tutorial from Marquette University.
(Don't worry about the distinction between "graded" and "non-graded"; this isn't an assignment! Use the tutorial as needed to help you get comfortable with this citation style.)
Image credit: Question Mark, Pixabay, accessed January 17, 2020. https://pixabay.com/photos/question-mark-hand-drawn-solution-2123969/.