Harnlumpang , Sittiporn, Yupaporn Yupass, and Saovalak Kosonkittiumporn. “Factors Affecting Teacher Competencies in Schools Huai Mek District Under the Kalasin Primary Educational Service Area Office 2 Kalasin Province”. Interdisciplinary Academic and Research Journal 3, no. 4 (August 2, 2023): 309–322. accessed August 28, 2026. https://so03.tci-thaijo.org/index.php/IARJ/article/view/269023.