Promburom, T., and N. Kimpakorn. “Factors Affecting Tourist Experience of Eco, Culture, and Wellness Tourism in the Upper Northern Provincial Cluster 1 of Thailand: Chiang Mai, Lamphun, Lampang, Mae Hong Son”. Journal of Thai Hospitality and Tourism, vol. 10, no. 1, June 2015, pp. 71-87, https://so04.tci-thaijo.org/index.php/tourismtaat/article/view/35509.