Nasution, Rahul, and Nurhanifah. “Utilization of Databases in Planning the Preaching of the Muhammadiyah Regional Leadership of Medan City”. Jurnal Dakwah dan Komunikasi 9, no. 2 (November 20, 2024): 55–62. Accessed September 8, 2025. https://journal.iaincurup.ac.id/index.php/JDK/article/view/11438.