APA استشهاد

Lerche Charles O. Concepts of international politics. Prentice hall of India pvt ltd.

استشهاد بنمط شيكاغو

Lerche Charles O. Concepts of International Politics. Delhi: Prentice hall of India pvt ltd.

MLA استشهاد

Lerche Charles O. Concepts of International Politics. Prentice hall of India pvt ltd.