Khamwachirapithak, P., and W. Khongouan. “Smart city development in a tourist city with valuable sites of cultural and natural environment: Case study of Amphawa Subdistrict Municipality, Samut Songkhram Province”. Kasetsart Journal of Social Sciences, vol. 45, no. 1, Dec. 2023, pp. 257–268, https://so04.tci-thaijo.org/index.php/kjss/article/view/269489.