APA (7th ed.) Citation

Williams, T. H., Current, R. N., & Freidel, F. (1969). A history of the United States (Third edition.). Knopf.

Chicago Style (17th ed.) Citation

Williams, T. Harry, Richard Nelson Current, and Frank Freidel. A History of the United States. Third edition. New York: Knopf, 1969.

MLA (9th ed.) Citation

Williams, T. Harry, et al. A History of the United States. Third edition. Knopf, 1969.