2017. KEPEMIMPINAN PROFETIK UMAR BIN KHATTAB DAN UMAR BIN ABDUL AZIZ. Ummul Qura Jurnal Institut Pesantren Sunan Drajat (INSUD) Lamongan. 10, 2 (Nov. 2017), 19–31. DOI:https://doi.org/10.55352/uq.v10i2.435.