Παραπομπή APA

Bharatdwaj, B. (2006). Physical geography: Introduction to earth. Discovery.

Παραπομπή Chicago Style

Bharatdwaj, B. Physical Geography: Introduction to Earth. New Delhi: Discovery, 2006.

Παραπομπή MLA

Bharatdwaj, B. Physical Geography: Introduction to Earth. Discovery, 2006.