APA-referens (7:e uppl.)

Burns, E. M., & Ralph, P. L. (1974). World civilizations: Their history and their culture : vol.2 (Fifth Edition.). W.W. Norton and Company.

Chicago-referens (17:e uppl.)

Burns, Edward McNall, och Philip Lee Ralph. World Civilizations: Their History and Their Culture : Vol.2. Fifth Edition. New York: W.W. Norton and Company, 1974.

MLA-referens (9:e uppl.)

Burns, Edward McNall, och Philip Lee Ralph. World Civilizations: Their History and Their Culture : Vol.2. Fifth Edition. W.W. Norton and Company, 1974.