Ramadhan, Muhammad Iqbal, and Nurul Sriminarti. “The Influence of Leadership and Competency Development on Employee Performance at PT Sustraco Adikreasi”. Amkop Management Accounting Review (AMAR) 5, no. 2 (July 22, 2025): 266–272. Accessed March 29, 2026. https://ojs.stieamkop.ac.id/index.php/amar/article/view/2807.