ก้านจักร พ.ณ. and พื้นชมภู ด. 2018. An Application of the Four Principles of Iddhipada to the Performances of Personnel Attached to Sub-District Municipalities in Kaset Wisai District, Roi Et Province. Academic Journal of Mahamakut Buddhist University Roi Et Campus. 8, 2 (Sep. 2018), 49–57.