Singh, B. (1987). The Problem of Change: A study of North-East India. Oxford U.P.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSingh, B.P. The Problem of Change: A Study of North-East India. Oxford U.P, 1987.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSingh, B.P. The Problem of Change: A Study of North-East India. Oxford U.P, 1987.
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