Panichayapan, P., Nimsunk, A. and Pooliam, R. (2025) “ Developing Academic Achievement on the Four Noble Truths for 2nd Level of Secondary Khainarai suksa army sponsor School Education Students Using Problem-based Learning”, Journal of Faculty of Humanities and Social Sciences Thepsatri Rajabhat University , 16(1), pp. 183–198. available at: https://so01.tci-thaijo.org/index.php/truhusocjo/article/view/271889 (accessed: 15 September 2026).