एपीए उद्धरण

Oldfield, F. (2005). Environmental change: Key issues and alternate approaches. Cambridge University Press.

शिकागो स्टाइल उद्धरण

Oldfield, Frank. Environmental Change: Key Issues and Alternate Approaches. Cambridge: Cambridge University Press, 2005.

एमएलए उद्धरण

Oldfield, Frank. Environmental Change: Key Issues and Alternate Approaches. Cambridge University Press, 2005.