Koto, Arifuddin S. “The Influence of Work Discipline, Training, and Competence on Employee Performance at PT REI Sistem Indonesia Group”. Proceeding Economy of Asia International Conference 2025, no. 1 (January 21, 2026): 1426–1432. Accessed May 9, 2026. https://conference.asia.ac.id/index.php/ecosia/article/view/331.