RIZKIA, T. P.; HARDIYANSYAH, M. R. Masa Kepemimpinan Khalifah Umar Bin Khattab. Hijaz: Jurnal Ilmu-Ilmu Keislaman, [S. l.], v. 2, n. 2, p. 88–94, 2023. DOI: 10.57251/hij.v2i2.811. Disponível em: https://jurnal.medanresourcecenter.org/index.php/HIJ/article/view/811. Acesso em: 17 feb. 2025.