khumhaeng, supatra, and C. . Morasil. “MARKETING STRATEGIES FOR THE DEVELOPMENT OF RELATED PRODUCT AND SERVICE STANDARDS WITH SPORTS TOURISM”. Academic Journal of Thailand National Sports University, vol. 16, no. 1, Jan. 2024, pp. 177-90, https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/260287.