Sanwong, K., Na Wichian, S., Acharry, S., & Acharry, Y. (2014). Utilization of Elderly Workers in Manufacturing. RMUTT Global Business and Economics Review, 9(2), 127–136. retrieved from https://so03.tci-thaijo.org/index.php/RMUTT-Gber/article/view/242060