kaushik, a., & Kaushik, C. P. (2014). perspectives in environmental studies. New age international limited.
Chicagoスタイル(17版)引用形式kaushik, anubha, , C P. Kaushik. Perspectives in Environmental Studies. New delhi: New age international limited, 2014.
MLA(9版)引用形式kaushik, anubha, , C P. Kaushik. Perspectives in Environmental Studies. New age international limited, 2014.
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