Ray, U. K. (1982). Plannings for the scheduled tribes and scheduled castes: A West Bengal perspective. Cultural Research Institute, Govt. of W.B.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRay, Ujjwal Kanti. Plannings for the Scheduled Tribes and Scheduled Castes: A West Bengal Perspective. Cultural Research Institute, Govt. of W.B, 1982.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRay, Ujjwal Kanti. Plannings for the Scheduled Tribes and Scheduled Castes: A West Bengal Perspective. Cultural Research Institute, Govt. of W.B, 1982.
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