คำบุศย์ ส, พื้นชมภู ด. An Application of the four Principles of Sangagavatthu to Customer Service of the Roi Et Transport office, Phon Thong District Branch. AJMBU [Internet]. 2018 Sep. 13 [cited 2024 May 4];8(2):69-77. Available from: https://so01.tci-thaijo.org/index.php/AJMBU/article/view/228766