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 2025 Apr. 9];2(1):1-14. available from: https://so08.tci-thaijo.org/index.php/JournalMSM/article/view/1435