1.
Pornchalitkittiporn S, Gulthawatvichai T. JOB PERFORMANCE ACHIEVEMENT MOTIVATION OF PERSONAL TRAINER AT FITNESS CENTER IN BANGKOK. JSSH [internet]. 2021 Dec. 30 [cited 2026 Sep. 19];22(3):370-83. available from: https://he02.tci-thaijo.org/index.php/spsc_journal/article/view/255650