Datta Ray, B. (1987). North-East India 2000 A.D: Perspective for futurology. Deep and Deep Pubs.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDatta Ray, B. North-East India 2000 A.D: Perspective for Futurology. Deep and Deep Pubs, 1987.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDatta Ray, B. North-East India 2000 A.D: Perspective for Futurology. Deep and Deep Pubs, 1987.
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