Bordeepong, S., D. Bhongsuwan, T. Pungrassami, and T. Bhongsuwan. “Mineralogy, Chemical Composition and Ceramic Properties of Clay Deposits in Southern Thailand”. Agriculture and Natural Resources, vol. 46, no. 3, June 2012, pp. 485-00, https://li01.tci-thaijo.org/index.php/anres/article/view/242902.