APA (7th ed.) Citation

Palmer, R. R., & Colton, J. (1962). A history of the modern world (2. ed.). Knopf.

Chicago Style (17th ed.) Citation

Palmer, Robert Roswell, and Joel Colton. A History of the Modern World. 2. ed. New York: Knopf, 1962.

MLA (9th ed.) Citation

Palmer, Robert Roswell, and Joel Colton. A History of the Modern World. 2. ed. Knopf, 1962.