APA (7th ed.) Citation

Palmer, R. R., & Colton, J. (1978). A history of the modern world (5th ed.). Knopf.

Chicago Style (17th ed.) Citation

Palmer, R. R., and Joel Colton. A History of the Modern World. 5th ed. New York: Knopf, 1978.

MLA (9th ed.) Citation

Palmer, R. R., and Joel Colton. A History of the Modern World. 5th ed. Knopf, 1978.