APA استشهاد

Malaviya, P., Singh, A., & Singh, P. (2009). Textbook of Environment and Ecology.

استشهاد بنمط شيكاغو

Malaviya, Piyush, Anoop Singh, و Pratibha Singh. Textbook of Environment and Ecology. New Delhi, Acme Learning, 2009.

MLA استشهاد

Malaviya, Piyush, et al. Textbook of Environment and Ecology. 2009.