Pattanapokinsakul, Kanyapat, and Nimit Soonsan. “Creative Health Tourism Development Guidelines: Secondary City Development in Ranong Province”. Rajapark Journal 17, no. 50 (February 25, 2023): 328–342. Accessed May 20, 2024. https://so05.tci-thaijo.org/index.php/RJPJ/article/view/259063.