Denjarukul, D., and D. Piromsombat. “Teachers Classification According to Risk Factors and Alternatives Proposed to Reduce Teachers’ Work burnout: SEM Tree Analysis”. KKU Research Journal (Graduate Studies) Humanities and Social Sciences, vol. 10, no. 3, Oct. 2023, pp. 33-56, https://so04.tci-thaijo.org/index.php/gskkuhs/article/view/259076.