Tripathi, A. (1993). Global environmental problems. Ashish Publishing House.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTripathi, A.K. Global Environmental Problems. New Delhi: Ashish Publishing House, 1993.
एमएलए (9वां संस्करण) प्रशस्ति पत्रTripathi, A.K. Global Environmental Problems. Ashish Publishing House, 1993.
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