APA (7th ed.) Zitazioa
Carlos, A. M., & Lewis, F. D. (2010). Commerce by a frozen sea: Native Americans and the European fur trade. University of Pennsylvania Press.
Chicago Style (17th ed.) Zitazioa
Carlos, Ann M., eta Frank D. Lewis. Commerce by a Frozen Sea: Native Americans and the European Fur Trade. Philadelphia: University of Pennsylvania Press, 2010.
MLA (9th ed.) Zitazioa
Carlos, Ann M., eta Frank D. Lewis. Commerce by a Frozen Sea: Native Americans and the European Fur Trade. University of Pennsylvania Press, 2010.
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