Kholue, R., S. Wongmonta, C. Na thalang, and P. Chairatana. “Model of Potential Promotion of Natural Tourism in Ranong Province”. Journal of the Association of Researchers, vol. 26, no. 1, Apr. 2021, pp. 57-70, https://so04.tci-thaijo.org/index.php/jar/article/view/247679.