APA (7th ed.) Zitazioa

Beitz, C. R. (1999). Political theory and international relations. Princeton University.

Chicago Style (17th ed.) Zitazioa

Beitz, Charles R. Political Theory and International Relations. Princeton: Princeton University, 1999.

MLA (9th ed.) Zitazioa

Beitz, Charles R. Political Theory and International Relations. Princeton University, 1999.