Sah, S.C.D., R.K. Kar, and R.Y. Singh. 1969. “Fossil Microplankton from the Langpar Formation of Therriaghat, South Shillong Plateau, Assam, India”. Journal of Palaeosciences 18 (1-3):143-50. https://doi.org/10.54991/jop.1969.827.