เกษมสถิตย์วงศ์ วราพร. “FACTORS EFFECTING ON STUDENT’S SELF-DISCIPLINE OF BACHELOR OF DEGREE AT RAMKHAMHAENG UNIVERSITY”. Journal of Yanasangvorn Research Institute Mahamakut Buddhist University 9, no. 1 (June 18, 2018): 111–124. Accessed April 19, 2024. https://so04.tci-thaijo.org/index.php/yri/article/view/173312.