Boonphetkaew, Umaporn, and Issarapong Poltanee. 2019. “Motivations Development Guideline of Health Tourism in Hot Spring Khao Chai Son, Khao Chai Son District, Phatthalung Province”. Journal of Cultural Approach 20 (38):27-39. https://so02.tci-thaijo.org/index.php/cultural_approach/article/view/209478.