APA (7th ed.) Citation
Palmer, R. R., & Colton, J. G. (1971). A history of the modern world (4th ed.). Knopf.
Chicago Style (17th ed.) Citation
Palmer, R. R., and Joel G. Colton. A History of the Modern World. 4th ed. New York: Knopf, 1971.
MLA (9th ed.) Citation
Palmer, R. R., and Joel G. Colton. A History of the Modern World. 4th ed. Knopf, 1971.
Warning: These citations may not always be 100% accurate.