kaushik, a., & Kaushik, C. P. (2014). perspectives in environmental studies. New age international limited.
Cita Chicago (17th ed.)kaushik, anubha, i C P. Kaushik. Perspectives in Environmental Studies. New delhi: New age international limited, 2014.
Cita MLA (9th ed.)kaushik, anubha, i C P. Kaushik. Perspectives in Environmental Studies. New age international limited, 2014.