Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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