APA (7th ed.) Citation

Sharma, P. D. (1985). Elements of ecology (5th.). Rastogi Publications.

Chicago Style (17th ed.) Citation

Sharma, P. D. Elements of Ecology. 5th. Meerut: Rastogi Publications, 1985.

MLA (9th ed.) Citation

Sharma, P. D. Elements of Ecology. 5th. Rastogi Publications, 1985.