Cita APA (7a ed.)

Carlos, A. M., & Lewis, F. D. (2010). Commerce by a Frozen Sea: Native Americans and the European Fur Trade. University of Pennsylvania Press.

Cita Chicago Style (17a ed.)

Carlos, Ann M., y Frank D. Lewis. Commerce by a Frozen Sea: Native Americans and the European Fur Trade. Philadelphia: University of Pennsylvania Press, 2010.

Cita MLA (8a ed.)

Carlos, Ann M., y Frank D. Lewis. Commerce by a Frozen Sea: Native Americans and the European Fur Trade. University of Pennsylvania Press, 2010.