Phantumabamrung P. THE DIFFERENCE IN SPECTATORS’ DEMOGRAPHIC AFFECTING PERCEIVED SERVICE QUALITY OF PROFESSIONAL MUAY THAI: THE CASE STUDY OF MAX MUAY THAI PROFESSIONAL COMPETITION. JournalMSM [Internet]. 2023 Feb. 18 [cited 2024 Apr. 28];2(1):1-14. Available from: https://so08.tci-thaijo.org/index.php/JournalMSM/article/view/1435