Cita APA

Keylor, W. R. 1. (2001). The Twentieth-Century World: An international history (Fourth edition.). New York: Oxford University Press.

Citación estilo Chicago

Keylor, William R. 1944-. The Twentieth-Century World: An International History. Fourth edition. New York: Oxford University Press, 2001.

Cita MLA

Keylor, William R. 1944-. The Twentieth-Century World: An International History. Fourth edition. New York: Oxford University Press, 2001.