एपीए उद्धरण

Verma, V. (1981). Textbook of sedimentary Petrology. International Book Distributors.

शिकागो स्टाइल उद्धरण

Verma, V.K. Textbook of Sedimentary Petrology. Dehra Dun: International Book Distributors, 1981.

एमएलए उद्धरण

Verma, V.K. Textbook of Sedimentary Petrology. International Book Distributors, 1981.