rodjam, chumpon, Preecha Panoram, Praiya Arsingsamanan, and Kanitin Songsopa. 2021. “Work Motivation That Affects Work Efficiency of Paper Industry Employees in Bangkok and Vicinity”. Journal of Innovation and Management 6 (2):143-57. https://so03.tci-thaijo.org/index.php/journalcim/article/view/248950.