ผลเพิ่มพูล วารุณี, and ประทุมเวียง ชูชีพ. “A Study Capacities of Teachers in Schools, Ubon Ratchathani Primary Educational Service Area office 3”. Ubon Ratchathani Journal of Research and Evaluation 2, no. 2 (August 27, 2021): 62–73. accessed October 3, 2026. https://so06.tci-thaijo.org/index.php/ubonreseva/article/view/250859.