โตสกุล รัตนา บุญมัธยะ. “Isan Peasants, Thai Nation and Modernization”. Journal of Social Sciences, Chiang Mai University 19, no. 1 (February 25, 2019): 69–129. accessed September 10, 2026. https://so04.tci-thaijo.org/index.php/jss/article/view/174428.