एपीए उद्धरण

Lundgren, L. W. (1999). Environmental geology (2nd ed.). Prentice-Hall of India.

शिकागो स्टाइल उद्धरण

Lundgren, Lawrence W. Environmental Geology. 2nd ed. New Jersey: Prentice-Hall of India, 1999.

एमएलए उद्धरण

Lundgren, Lawrence W. Environmental Geology. 2nd ed. Prentice-Hall of India, 1999.