Ro’uf, A. “Perkembangan Pemikiran Hukum Islam Masa Bani Umayyah”. Jurnal Ilmu Pendidikan Islam, Vol. 16, no. 2, Dec. 2018, pp. 158-73, https://ejournal.kopertais4.or.id/pantura/index.php/jipi/article/view/3343.