Someran, Laddawan, Soraya Supaphol, and Nimit Sukjai. “Organizational culture factors and working environment factors that affect the work efficiency of employees of Sermsuk Public Company Limited”. Rajamangala University of Technology Tawan-ok Social Science Journal 10, no. 1 (June 28, 2021): 76–85. accessed September 29, 2026. https://so05.tci-thaijo.org/index.php/SocialJournal2rmutto/article/view/247835.