Krishnamoorthy Bala. (2017). Environmental Management (3rd ed.). PHI Learning Pvt. Ltd.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKrishnamoorthy Bala. Environmental Management. 3rd ed. New Delhi: PHI Learning Pvt. Ltd, 2017.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKrishnamoorthy Bala. Environmental Management. 3rd ed. PHI Learning Pvt. Ltd, 2017.
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