บุญคง บุญฤกษ์. “Happiness and Working Motivation of Workers in Suratthani Abstract Boonrirk Boonkong”. Journal of Management Sciences Suratthani Rajabhat University 3, no. 2 (December 30, 2016): 191–212. Accessed April 29, 2024. https://so03.tci-thaijo.org/index.php/msj/article/view/116766.