สมพงษ์ผึ้ง ไ., and พื้นชมภู ด. “An Application of the Five Principles of Bala to the Management of Sub-District Administrative Organizations in Kaset Wisai District, Roi Et Province”. Academic Journal of Mahamakut Buddhist University Roi Et Campus, vol. 8, no. 1, July 2018, pp. 68-76, https://so01.tci-thaijo.org/index.php/AJMBU/article/view/194922.