Burns, E. M., Ralph, P. L., Lerner, R. E., & Meacham, S. (1991). World civilizations: Their history and their culture (7th ed.). W.W. Norton.
Citace podle Chicago (17th ed.)Burns, Edward McNall, Philip Lee Ralph, Robert E. Lerner, a Standish Meacham. World Civilizations: Their History and Their Culture. 7th ed. New York, N.Y. ; London: W.W. Norton, 1991.
Citace podle MLA (8th ed.)Burns, Edward McNall, et al. World Civilizations: Their History and Their Culture. 7th ed. W.W. Norton, 1991.
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