एपीए उद्धरण

Mcconnell, R. (2015). Environmental Geology Today. Jones and Bartlett.

शिकागो स्टाइल उद्धरण

Mcconnell, R. Environmental Geology Today. Jones and Bartlett, 2015.

एमएलए उद्धरण

Mcconnell, R. Environmental Geology Today. Jones and Bartlett, 2015.