Utumpa , Paveena, and Panya Sakkaew. “SPORT ADVENTURE MODEL FOR SUSTAINABLE GREEN TOURISM”. Academic Journal of Thailand National Sports University 16, no. 1 (January 9, 2024): 165–176. Accessed May 17, 2024. https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/260401.