APA (7th ed.) Citation

Williams, T. H., Current, R. N., & Freidel, F. B. (1969). A history of the United States (3d ed.). Knopf.

Chicago Style (17th ed.) Citation

Williams, T. Harry, Richard Nelson Current, and Frank Burt Freidel. A History of the United States. 3d ed. New York: Knopf, 1969.

MLA (9th ed.) Citation

Williams, T. Harry, et al. A History of the United States. 3d ed. Knopf, 1969.