Cita APA (7a ed.)

Sharma, P. D. (2013). Ecology and environment (11th rev. ed.). Rastogi Publications.

Cita Chicago Style (17a ed.)

Sharma, P. D. Ecology and Environment. 11th rev. ed. Meerut: Rastogi Publications, 2013.

Cita MLA (9a ed.)

Sharma, P. D. Ecology and Environment. 11th rev. ed. Rastogi Publications, 2013.