Simpol, Wanida, Phoom Praraksa, and Siridej Sujiva. “Validity Evidence of the Sufficient Life Skill Model”. New Trends and Issues Proceedings on Humanities and Social Sciences 5, no. 1 (June 5, 2018): 121–127. Accessed November 22, 2024. https://un-pub.eu/ojs/index.php/pntsbs/article/view/3393.