एपीए उद्धरण

Mcconnell, R. L., & Abel , D. C. (2015). Environmental geology today. Jones & Bartlett.

शिकागो स्टाइल उद्धरण

Mcconnell, Robert L., और Daniel C. Abel. Environmental Geology Today. Burlington: Jones & Bartlett, 2015.

एमएलए उद्धरण

Mcconnell, Robert L., और Daniel C. Abel. Environmental Geology Today. Jones & Bartlett, 2015.