एपीए उद्धरण

Marshak, S. (2004). Essentials of geology. W.W.Nosrton & Company.

शिकागो स्टाइल उद्धरण

Marshak, Stephen. Essentials of Geology. New York: W.W.Nosrton & Company, 2004.

एमएलए उद्धरण

Marshak, Stephen. Essentials of Geology. W.W.Nosrton & Company, 2004.