Chansiri, D., Singkha, W., & Sonrod, S. . (2020). Development of Environment to Increase Effectiveness for Elderly Workers in the Workplace. Rajamangala University of Technology Tawan-Ok Social Science Journal, 9(1), 50–59. Retrieved from https://so05.tci-thaijo.org/index.php/SocialJournal2rmutto/article/view/243499