Cita APA (7a ed.)

SHARMA, P. (1975). Elements of Ecology (1st.). Rastogi Publication.

Cita Chicago Style (17a ed.)

SHARMA, P.D. Elements of Ecology. 1st. Meerut: Rastogi Publication, 1975.

Cita MLA (9a ed.)

SHARMA, P.D. Elements of Ecology. 1st. Rastogi Publication, 1975.