ชุมภูแสง ล. and พื้นชมภู ด. 2018. An Application of the Four Principles of Brahmavihara by the Administrators of Sub-district Administrative Organizations in Nong Phok District, Roi Et Province. Academic Journal of Mahamakut Buddhist University Roi Et Campus. 8, 1 (Jul. 2018), 88–96.