บุตรหมื่น อ. “The Effects of Group Process for Developing Grade 9 Students’Adversity Quotient”. Journal of Education Khon Kaen University (Graduate Studies Research), vol. 11, no. 4, May 2018, pp. 254-6, https://so02.tci-thaijo.org/index.php/EDGKKUJ/article/view/125586.