kaushik, a., & Kaushik, C. P. (2014). perspectives in environmental studies. New age international limited.
Style de citation Chicago (17e éd.)kaushik, anubha, et C P. Kaushik. Perspectives in Environmental Studies. New delhi: New age international limited, 2014.
Style de citation MLA (9e éd.)kaushik, anubha, et C P. Kaushik. Perspectives in Environmental Studies. New age international limited, 2014.