Kasetkasem, Sittichai, Pote Boonruang, Vatcharee Lertmongkol, Am-On Aungsuratana, Jularat Wattana, Somsri Pattratham, and Sirisak Pramsopee. “ Kasetsart University Research and Development Institute”. Kasetsart Journal of Social Sciences 16, no. 2 (July 1, 1995): 156–167. accessed September 11, 2026. https://so04.tci-thaijo.org/index.php/kjss/article/view/243716.