มากพันธ์ วัฒนณรงค์. 2018. “Survey of Quantity and Valuation of Pra at Buddha Cave Community: A Boundary Between Nakhon Si Thammarat and Trang Provinces”. KKU Science Journal 46 (2):317-23. https://ph01.tci-thaijo.org/index.php/KKUSciJ/article/view/249883.