Anil Tyagi. (2018). CBSE UGC NET/SET: Environmental science. Danika.
シカゴスタイル引用形Anil Tyagi. CBSE UGC NET/SET: Environmental Science. New Delhi: Danika, 2018.
MLA引用形式Anil Tyagi. CBSE UGC NET/SET: Environmental Science. Danika, 2018.
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