एपीए उद्धरण

Plummer, C. C. (2005). Physical geology. McGraw-Hill.

शिकागो स्टाइल उद्धरण

Plummer, Charles C. Physical Geology. McGraw-Hill, 2005.

एमएलए उद्धरण

Plummer, Charles C. Physical Geology. McGraw-Hill, 2005.