Cita APA

Patterson, J. T. 1. (1989). America in the Twentieth Century: A history (Third edition.). San Diego: Harcourt Brace Jovanovich, Publishers.

Citación estilo Chicago

Patterson, James T. 1935-. America in the Twentieth Century: A History. Third edition. San Diego: Harcourt Brace Jovanovich, Publishers, 1989.

Cita MLA

Patterson, James T. 1935-. America in the Twentieth Century: A History. Third edition. San Diego: Harcourt Brace Jovanovich, Publishers, 1989.