APA Edition Citation

Verma, P. S., & Agarwal, V. K. (1989). Enviornmental biology (4th ed.). S. Chand.

Chicago Edition Citation

Verma, P. S., and V. K. Agarwal. Enviornmental Biology. 4th ed. New Delhi: S. Chand, 1989.

MLA Edition Citation

Verma, P. S., and V. K. Agarwal. Enviornmental Biology. 4th ed. S. Chand, 1989.

Warning: These citations may not always be 100% accurate.