ใต้ไธสง ภัทรดนัย. “HAPPINESS AT WORK OF EMPLOYEE AT TRUE DISTRIBUTION AND SALES COMPANY LIMITED, REGIONAL UPPER NORTHEAST”. Valaya Alongkorn Review 8, no. 1 (April 30, 2018): 15–35. Accessed March 29, 2024. https://so06.tci-thaijo.org/index.php/var/article/view/146930.