Sah, S.C.D., R.K. Kar, and R.Y. Singh. “Fossil Microplankton from the Langpar Formation of Therriaghat, South Shillong Plateau, Assam, India”. Journal of Palaeosciences 18, no. 1-3 (December 31, 1969): 143–150. Accessed August 25, 2024. https://jpsonline.co.in/index.php/jop/article/view/827.