Uttarak, A. and Prasertcharoensuk, T. (2018) “The Multi-Level Factors Affecting Teachers’ Teaching Effectiveness in School under the Office of Secondary Educational Service Area 25”, Journal of Innovation and Learning Sciences, 12(3), pp. 11–23. available at: https://so02.tci-thaijo.org/index.php/EDGKKUJ/article/view/241792 (accessed: 14 September 2026).