Chayanusasanee Jundon, Sippiya, and Nattiya Jundon. 2011. “Development of Role Model Ethical Leaders for the Elderly on Heet-Kong of Isan Culture in Mahasarakham Province”. Interdisciplinary Academic and Research Journal 2 (6). Maha Sara Kham, TH.:269-82. https://doi.org/10.14456/iarj.2022.146.