Karnchanopart, Wisit, and Sarayut Noikasem. 2019. “EFFECT OF SERVICE MARKETING MIXED IN MUAY THAI TOWARDS COMPETITIVE ADVANTAGES”. Academic Journal of Thailand National Sports University 11 (1). Chonburi, Thailand:205-16. https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/246404.