โบราณมูล ป. (2011) “Self-Practice in Three Bases of Meritorious Action by Teachers of Roi Et Municipality Schools, Roi Et Province”, Journal of Yanasangvorn Research Institute Mahamakut Buddhist University, 2(1), pp. 53–62. available at: https://so04.tci-thaijo.org/index.php/yri/article/view/175029 (accessed: 29 September 2026).