Liana, Tri Melda Mei, Edy Wijaya Soekatendel, and Meilisa Aryanti. “Enhancing Personnel Performance Through Competence and Leadership: The Mediating Role of HR Development As a Catalyst for Economic Advancement in the North Sumatra Regional Police”. International Journal of Economics Development Research (IJEDR) 5, no. 6 (December 31, 2024): 5483–5494. Accessed July 12, 2025. https://journal.yrpipku.com/index.php/ijedr/article/view/6839.