Promthong, S. “Causal Factors of Service Quality Affecting Perceived Value and Decision-Making of Mu Te Lu Tourism Travelers in Nong Khai, Bueng Kan, and Udon Thani Provinces”. Rajapark Journal, vol. 19, no. 62, Mar. 2025, pp. 182-03, https://so05.tci-thaijo.org/index.php/RJPJ/article/view/276069.