एपीए उद्धरण

Goudie, A. (1993). The nature of the environment. Cambridge, Massachusetts: BlackWell.

शिकागो स्टाइल उद्धरण

Goudie, Andrew. The Nature of the Environment. Cambridge, Massachusetts: BlackWell, 1993.

एमएलए उद्धरण

Goudie, Andrew. The Nature of the Environment. Cambridge, Massachusetts: BlackWell, 1993.