Cita APA (7a ed.)

Keylor, W. R. (2009). A World of nations: The international order since 1945 (Second edition.). Oxford University Press.

Cita Chicago Style (17a ed.)

Keylor, William R. A World of Nations: The International Order Since 1945. Second edition. New York: Oxford University Press, 2009.

Cita MLA (9a ed.)

Keylor, William R. A World of Nations: The International Order Since 1945. Second edition. Oxford University Press, 2009.