APA

Gopalan, . (1979). Textbook of physics. : Vidyarthi Mithram Book Depot, Kottayam.

Chicago

Gopalan, . 1979. Textbook of physics. : Vidyarthi Mithram Book Depot, Kottayam.

Harvard

Gopalan, . (1979). Textbook of physics. : Vidyarthi Mithram Book Depot, Kottayam.

MLA

Gopalan, . Textbook of physics. : Vidyarthi Mithram Book Depot, Kottayam. 1979.