Nurkholijah Siregar, Ahmad Sukri Harahap. KEPEMIMPINAN MASA KHULAFA AR-RASYIDIN ABU BAKAR AS-SHIDDIQ DAN UMAR BIN KHATTAB. [Internet]. 2025Feb.8 [cited 2026Nov.11];4(1):1-12. Available from: https://ojs.staira.ac.id/index.php/raudah/article/view/566