Yusuf, Burhanuddin. “KHILAFAH RASYIDAH: KAJIAN ATAS MAKNA, FUNGSI DAN SISTEM SUKSESINYA”. Jurnal Ushuluddin: Media Dialog Pemikiran Islam 19, no. 1 (June 1, 2015). Accessed May 7, 2025. https://arsip-journal.uin-alauddin.ac.id/index.php/alfikr/article/view/615.