Phola, S., Kosonkittiumporn, S. and Kaenapoom, S. (2019) “Achievement Management Model of Secondary Schools in the Northeastern Region”, Journal of Graduate MCU KhonKaen Campus, 6(2), pp. 360–373. available at: https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/243595 (accessed: 28 August 2026).