APA (7e ed.) Bronvermelding

Sen, D. (1975). Basic principles of geopolitics and history: Theoretical aspect of international relations. Concept Pub. Co..

Chicago (17e ed.) Bronvermelding

Sen, Debabrata. Basic Principles of Geopolitics and History: Theoretical Aspect of International Relations. Delhi: Concept Pub. Co., 1975.

MLA (8e ed.) Bronvermelding

Sen, Debabrata. Basic Principles of Geopolitics and History: Theoretical Aspect of International Relations. Concept Pub. Co., 1975.