APA Edition Citation

Asthana, D. K., & Asthana, M. (2006). Textbook of Environmental studies.

Chicago Edition Citation

Asthana, D K., and Meera Asthana. Textbook of Environmental Studies. New delhi, S Chandh, 2006.

MLA Edition Citation

Asthana, D K., and Meera Asthana. Textbook of Environmental Studies. 2006.

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