Tengku Sulaiman, R. S. . “DEVELOPMENT OF TOURISM ROCK CLIMBING STANDARD COURSES FOR ANDAMAN SEA COAST AREA”. Academic Journal of Thailand National Sports University, vol. 11, no. 2, May 2019, pp. 228-41, https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/244714.