Natepracha, P. “THE DEVELOPMENT OF STUDENT’S PROFESSIONAL ETHICS IN THE INSTITUTE OF PHYSICAL EDUCATION BY INTEGRATIVE RESEARCH”. Academic Journal of Thailand National Sports University, vol. 5, no. 2, May 2013, pp. 157-74, https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/254960.