Sukumar, R. (1995). Elephant days and nights: Ten years with the Indian elephant. Oxford University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSukumar, Raman. Elephant Days and Nights: Ten Years with the Indian Elephant. New Delhi: Oxford University Press, 1995.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSukumar, Raman. Elephant Days and Nights: Ten Years with the Indian Elephant. Oxford University Press, 1995.
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