Schuman, F. L. (1958). International politics: The western state system in transition. New York: McGraw-Hill book company, inc.
Trích dẫn kiểu ChicagoSchuman, Frederick L. International Politics: The Western State System in Transition. New York: McGraw-Hill book company, inc, 1958.
Deismireacht MLASchuman, Frederick L. International Politics: The Western State System in Transition. New York: McGraw-Hill book company, inc, 1958.
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