Tiwari , S. (2007). Global warming and its effects on environment. Adhyayan.
Chicago-čujuhus (17. p.)Tiwari , Somnath. Global Warming and Its Effects on Environment. New Delhi: Adhyayan, 2007.
MLA-čujuhus (9. p.)Tiwari , Somnath. Global Warming and Its Effects on Environment. Adhyayan, 2007.
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