Widyasari, D. D., R. S. Lubis, W. A. Nasution, H. Lubis, S. Rahayu, S. G. Pane, N. M. R. Tarigan, E. Suprayitno, and Z. Riana. “The Influence of Teacher Competence, Learning Materials, and Learning Facilities on Employee Motivation in Participating in Training”. Proceeding of International Conference Technology, Economics, and Social Science, vol. 1, no. 1, Jan. 2026, pp. 536-40, https://journals.adaresearch.or.id/ictess/article/view/316.