एपीए उद्धरण

Sharma, P. D. (1996). Ecology and environment (Ed.7 rev.).

शिकागो स्टाइल उद्धरण

Sharma, P D. Ecology and Environment. Ed.7 rev. Meerut, Rastogi Publications, 1996.

एमएलए उद्धरण

Sharma, P D. Ecology and Environment. Ed.7 rev. 1996.