Roonapai, Rttanawan. “Attitudes and Opinions of Farmers towards the Students’s Role Amphoe Kamphaeng Saen, Changwat Nakhon Pathom”. Kasetsart Journal of Social Sciences 12, no. 2 (July 1, 1991): 112–117. accessed September 11, 2026. https://so04.tci-thaijo.org/index.php/kjss/article/view/244000.