APA (7th ed.) Citation

Cox, D., Koberna, T., & Nassif, B. (1969). Problems in American history. Wiley.

Chicago Style (17th ed.) Citation

Cox, David, Thomas Koberna, and Betty Nassif. Problems in American History. New York: Wiley, 1969.

MLA (8th ed.) Citation

Cox, David, et al. Problems in American History. Wiley, 1969.