Arpha, K., Phonyiam, N., Sutthiprapa, P., Khumdinphithak, S. and Thawinkarn, D. (2020) “Policy Recommendation to Develop Innovative Organization of Secondary School in Khon Kaen Province”, KKU Research Journal (Graduate Studies) Humanities and Social Sciences, 8(3), pp. 32–41. available at: https://so04.tci-thaijo.org/index.php/gskkuhs/article/view/247807 (accessed: 29 September 2026).