หนกหลัง ส. “THE EFFECT OF NON-FORMAL EDUCATION PROGRAM WITH RECREATION ACTIVITIES ON COPING WITH STRESS OF RURAL EARLY ADOLESCENTS”. Journal of Industrial Education, vol. 16, no. 3, Dec. 2017, pp. 201-8, https://ph01.tci-thaijo.org/index.php/JIE/article/view/129159.