William R Keylor. (2003). A world of nations: The international order since 1945. Oxford University Press.
Chicago Edition CitationWilliam R Keylor. A World of Nations: The International Order Since 1945. New York: Oxford University Press, 2003.
Cita MLAWilliam R Keylor. A World of Nations: The International Order Since 1945. Oxford University Press, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.