Ibrahim, Duski. “Rekonstruksi Konsep Ijtihad: Studi Pemikiran Ben’umar Tentang Al-Ijtihad Fi Al-Waqi’”. Intizar 21, no. 2 (1): 279-298. Accessed June 25, 2019. http://jurnal.radenfatah.ac.id/index.php/intizar/article/view/313.