ล่องประเสริฐ ส. and ไพจิตร ป. (2016) “Business Ethics of Tourism in Koh Samui District Suratthani Province”, Journal of Management Sciences Suratthani Rajabhat University, 3(1), pp. 149–172. Available at: https://so03.tci-thaijo.org/index.php/msj/article/view/116600 (Accessed: 4 May 2024).