APA (7th ed.) Citation

Williams, T. H., Current, R. N., & Freidel, F. B. (1959). A history of the United States. Knopf.

Chicago Style (17th ed.) Citation

Williams, T. Harry, Richard N. Current, and Frank Burt Freidel. A History of the United States. New York: Knopf, 1959.

MLA (8th ed.) Citation

Williams, T. Harry, et al. A History of the United States. Knopf, 1959.