The first time you cite a source, the note should include publication information for that work as well as the page number for the passage you are citing.
1. Peter Burchard, One Gallant Rush: Robert Gould Shaw and His Brave Black Regiment (New York: St. Martin’s, 1965), 85.
For later references to a source you have already cited, you may simply give the author’s last name, a short form of the title, and the page or pages cited. A short form of the title of a book or another long work is italicized; a short form of the title of an article or another short work is put in quotation marks.
4. Burchard, One Gallant Rush, 31.
When you have two notes in a row from the same source, you may use “Ibid.” (meaning “in the same place”) and the page number for the second note. Use “Ibid.” alone if the page number is the same.
5. Jack Hurst, Nathan Bedford Forrest: A Biography (New York: Knopf, 1993), 8.
6. Ibid., 174.