Dyfyniad APA

Levi, W. (1974). International politics: Foundations of the system. University of Minnesota Press.

Dyfyniad Arddull Chicago

Levi, Werner. International Politics: Foundations of the System. Minneapolis: University of Minnesota Press, 1974.

Dyfyniad MLA

Levi, Werner. International Politics: Foundations of the System. University of Minnesota Press, 1974.

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