Worrakawin , Kawee, Seri Wongmontha, Chawalee Na Thalang, and Thanarat Rattanapongtara. “Creativity for Perceptual Tourism in Sandstone Geomophology of Pa-Tam and Sam-Pan-Bok Geologic Park, Ubon Ratchathani Province”. Journal of Multidisciplinary in Humanities and Social Sciences 3, no. 2 (June 21, 2020): 156–169. accessed October 9, 2026. https://so04.tci-thaijo.org/index.php/jmhs1_s/article/view/243532.