Chicago documentation: notes 4
Example:

The writer is quoting from page 93 of Chronicles of the Vikings: Records, Memorials, and Myths, by R. I. Page; the book was published in Toronto in 1995 by University of Toronto Press. This is the first reference to the book in the paper.

1. R. I. Page, Chronicles of the Vikings: Records, Memorials, and Myths (Toronto: University of Toronto Press, 1995), p. 92.

1. R. I. Page, Chronicles of the Vikings: Records, Memorials, and Myths (Toronto: University of Toronto Press, 1995), 92.

The abbreviation “p.” is not used with page numbers in Chicago style.