Morgenthau, Hans. Política entre as nações. Brasilia: Editora UnB, 2002. 12. Herz,john. Political Realism and Political Idealism: A Study in Theories and Realities. Chicago: Chicago University Press, 1951.

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 Morgenthau, Hans. Política entre as nações. Brasilia: Editora UnB, 2002. 12. Herz,john. Political Realism and Political Idealism: A Study in Theories and Realities. Chicago: Chicago University Press, 1951.