एपीए उद्धरण

Metcalfe,Sarah. (2005). Atmospheric pollution and environmental change. Hodder Arnold.

शिकागो स्टाइल उद्धरण

Metcalfe,Sarah. Atmospheric Pollution and Environmental Change. New York: Hodder Arnold, 2005.

एमएलए उद्धरण

Metcalfe,Sarah. Atmospheric Pollution and Environmental Change. Hodder Arnold, 2005.