Cita APA

Kaushik, A., & Kaushik, C. P. (2004). Perspectives in environmental studies (2nd ed.). New Age International (P) Ltd., Publishers.

Citación estilo Chicago

Kaushik, Anubha, and C. P. Kaushik. Perspectives in Environmental Studies. 2nd ed. New Delhi: New Age International (P) Ltd., Publishers, 2004.

Cita MLA

Kaushik, Anubha, and C. P. Kaushik. Perspectives in Environmental Studies. 2nd ed. New Age International (P) Ltd., Publishers, 2004.