Shounchupon, A. . “GUIDELINES FOR DEVELOPING THE WELLNESS TOURISM TO ENCOURAGE THE COMPETITIVE ADVANTAGE WITH HIGH VALUE SERVICES IN SA KAEO PROVINCE”. Valaya Alongkorn Review, vol. 12, no. 2, Aug. 2022, pp. 99-117, https://so06.tci-thaijo.org/index.php/var/article/view/248968.