Biyanto, Biyanto. “Suksesi Kepemimpinan Arab Pra-Islam Dan Periode Al-Khulafā’ Al-Rashidin”. Islamica: Jurnal Studi Keislaman 1, no. 1 (September 4, 2006): 76-85. Accessed April 19, 2024. https://islamica.uinsby.ac.id/index.php/islamica/article/view/10.