Chan-ard, T., M. Cota, C. Achachak, and M. Safuwong. “Measurements of the Big-Headed Turtle (Platysternon megacephalum Gray, 1831) (Platysternidae, Testudines) from Phu Luang, Loei Province, Northeastern Thailand”. The Thailand Natural History Museum Journal, vol. 6, no. 2, Dec. 2012, pp. 153-7, https://li05.tci-thaijo.org/index.php/thnhmj/article/view/1817.