สีสันต์บุญจันทร์. “Analysis Factors Fo Servant Leaderships Qualities of Teacher under the Office of the Vocational Education Commission, Ministry of Education”. Journal of Industrial Education 13, no. 2 (August 25, 2014): 58-65. Accessed July 13, 2020. https://ph01.tci-thaijo.org/index.php/JIE/article/view/26492.