Wheeler, W. B., & Becker, S. D. (1990). Discovering the American past: A look at the evidence (2nd ed.). Boston: Houghton Mifflin.
Παραπομπή Chicago StyleWheeler, William Bruce, και Susan D. Becker. Discovering the American Past: A Look At the Evidence. 2nd ed. Boston: Houghton Mifflin, 1990.
Παραπομπή MLAWheeler, William Bruce, και Susan D. Becker. Discovering the American Past: A Look At the Evidence. 2nd ed. Boston: Houghton Mifflin, 1990.
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