APA (7th ed.) Citation

Current, R. N., Freidel, F. B., & Williams, T. H. (1971). American history: A survey. Knopf.

Chicago Style (17th ed.) Citation

Current, Richard Nelson, Frank Burt Freidel, and T. Harry Williams. American History: A Survey. New York: Knopf, 1971.

MLA (9th ed.) Citation

Current, Richard Nelson, et al. American History: A Survey. Knopf, 1971.