Ritthisak, Wantana, and Chareeporn Srithong. 2025. “Work Motivation Affecting Performance Efficacy of Employees in Steel Cutting and Stamping Factory, Chonburi Province”. Journal of Graduate MCU KhonKaen Campus 12 (2):72-83. https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/276599.