एपीए उद्धरण

Sen, D. (1975). Basic principles of geopolitics and history, thoeretical aspect of international ralations. Concept Publishing.

शिकागो स्टाइल उद्धरण

Sen, Debabrata. Basic Principles of Geopolitics and History, Thoeretical Aspect of International Ralations. Delhi: Concept Publishing, 1975.

एमएलए उद्धरण

Sen, Debabrata. Basic Principles of Geopolitics and History, Thoeretical Aspect of International Ralations. Concept Publishing, 1975.