Wongpornpenpab, M., Vatanaoran, P., Attasat, C., & Praphairaksit, N. (2009). Tourists’ Opinion on the Potential of Geological Museum for Educational Tourism. Kasetsart Journal of Social Sciences, 30(3), 248–259. Retrieved from https://so04.tci-thaijo.org/index.php/kjss/article/view/246520