Plarin, K., Praphaiphet, S., Praphaiphet, S., Sanglao, W., Sukkhamduang, S., & Prarasri, A. (2022). Learning Leadership Development Strategy for Secondary School Principals. Journal of Intellect Education, 1(2), 1–13. retrieved from https://so06.tci-thaijo.org/index.php/IEJ/article/view/263074