MUKHAMAD USAMAH. Kepemimpinan Umar bin Khattab dan Institusionalisasi Peradaban Islam Awal. Marifah: Jurnal Pendidikan dan Pemikiran Peradaban Islam, [S. l.], v. 3, n. 2, 2026. Disponível em: https://www.e-jurnal.staihas.journalstaihas.my.id/index.php/marifah/article/view/217. Acesso em: 9 aug. 2026.