Loachai, Phichamol. “The Administrator Competencies and Personnel Administration in School under Samutsongkhram Primary Educational Service Area Office”. Journal of Multidisciplinary in Humanities and Social Sciences 4, no. 3 (October 28, 2021): 1217–1226. Accessed May 6, 2024. https://so04.tci-thaijo.org/index.php/jmhs1_s/article/view/254434.