Thakumsorn S, Luernshavee APDP. Legal Problems about Physical Fitness Entrepreneurship. JRDI. RMU [Internet]. 2019 Dec. 30 [cited 2024 Apr. 28];6(2):257-72. Available from: https://so03.tci-thaijo.org/index.php/rdirmu/article/view/233184