Agrawal, D. K. C. (1996). Environmental biology (2nded.). Agro Botanical Pub.
Cita Chicago (17th ed.)Agrawal, Dr. K. C. Environmental Biology. 2nded. New Delhi: Agro Botanical Pub, 1996.
Cita MLA (9th ed.)Agrawal, Dr. K. C. Environmental Biology. 2nded. Agro Botanical Pub, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.