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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMeghalaya. Forest Department. Department of Forests and Environment और Rohming L. Thiek. The Working Plan of Nongkhyllem and Umsaw Reserve Forests Under Khasi Hills Division (For the Year 2013-2014 to 2022-2023). Meghalaya: Department of Forests and Environment, Government of Meghalaya, 2010.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMeghalaya. Forest Department. Department of Forests and Environment और Rohming L. Thiek. The Working Plan of Nongkhyllem and Umsaw Reserve Forests Under Khasi Hills Division (For the Year 2013-2014 to 2022-2023). Department of Forests and Environment, Government of Meghalaya, 2010.