एपीए उद्धरण

Cunningham,William P. (1999). Environmental encyclopedia (2.). Jaico Publishing House.

शिकागो स्टाइल उद्धरण

Cunningham,William P. Environmental Encyclopedia. 2. Mumbai: Jaico Publishing House, 1999.

एमएलए उद्धरण

Cunningham,William P. Environmental Encyclopedia. 2. Jaico Publishing House, 1999.