ศุภฤกษ์ชาติกุล ส., Voracharoensri, S., & Charupheng, M. (2021). ENHANCEMENT OF OPTIMISM FOR ADOLESCENT STUDENTS THROUGH GUIDANCE ACTIVITIES . Journal MBU Education, 9(2), 241–252. retrieved from https://so04.tci-thaijo.org/index.php/edj/article/view/253590