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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNarain, Sunita & Others. State of India's Environment 2015. New Delhi: Centre for science and environment, 2015.
एमएलए (9वां संस्करण) प्रशस्ति पत्रNarain, Sunita & Others. State of India's Environment 2015. Centre for science and environment, 2015.
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