Ruangnak, Vischayanat, Jintana Sarayuthpitak, and Sarinya Rodpipat. 2022. “EFFECTS OF COMPETENCY - BASED LEARNING ON LIFE AND CAREER SKILLS OF SECONDARY SCHOOL STUDENTS IN HEALTH EDUCATION SUBJECT USING PROBLEM - BASED LEARNING”. Academic Journal of Thailand National Sports University 15 (1). Chonburi, Thailand:247-58. https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/250799.