Janma, Narumon. “Capacity and Market Demand of Wellness Tourism for Hot Springs, Phetchabun Province”. Journal of Science and Technology CRRU 1, no. 1 (June 12, 2022): 40–56. accessed September 12, 2026. https://li01.tci-thaijo.org/index.php/jstcrru/article/view/254002.