Kittisuwannakul, Thanapan, Adul Wangsrikoon, and Chaiwat Sutthirat. “The Needs of Competency for Primary Private School Teachers”. Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University 11, no. 2 (December 21, 2017): 48–57. accessed January 7, 2026. https://so01.tci-thaijo.org/index.php/GraduatePSRU/article/view/106474.