KANG, SooJin, and YoungHo KIM. 2014. “ADOLESCENTS’ PHYSICAL ACTIVITY AND ITS RELATIONSHIP WITH SELF-EFFICACY AND SOCIAL NORMS: STRUCTURE EQUATION MODEL”. Journal of Sports Science and Technology 14 (1):227-35. https://he01.tci-thaijo.org/index.php/JSST/article/view/44105.