Burns, E. M., Lerner, R. E., Meacham. Standish, & Ralph, P. L. (1986). World Civilization: Their history and their culture (7th ed.). W.W. Norton and company.
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Chicago Style (17th ed.) Zitazioa
Burns, Edward Mcnall, Robert E. Lerner, Meacham. Standish, eta Philip Lee Ralph. World Civilization: Their History and Their Culture. 7th ed. New york: W.W. Norton and company, 1986.
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MLA (9th ed.) Zitazioa
Burns, Edward Mcnall, et al. World Civilization: Their History and Their Culture. 7th ed. W.W. Norton and company, 1986.
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Kontuz: berrikusi erreferentzia hauek erabili aurretik.