Ritthimas, T., Sawetvorrachot, T. and Aunjanam, S. (2024) “INDICATOR DEVELOPMENT OF UPRIGHT SCHOOL IN THE PRIMARY SCHOOL GOVERNMENT INSPECTORATE AREA 5”, Journal of Education and Innovation, 26(4), pp. 228–241. available at: https://so06.tci-thaijo.org/index.php/edujournal_nu/article/view/270341 (accessed: 15 September 2026).