Umar, A. 2012. Konsep Hadis Mukhtalif di Kalangan Ahli Fikih dan Ahli Hadis. Mutawatir : Jurnal Keilmuan Tafsir Hadith. 2, 2 (Dec. 2012), 274–293. DOI:https://doi.org/10.15642/mutawatir.2012.2.2.274-293.