Khalek, Nancy. “The Emergence of Early Sufi Piety and Sunnī Scholasticism: ʿAbdallāh B. Al-Mubārak and the Formation of Sunnī Identity in the Second Islamic Century. By Feryal Salem”. JAOS 140, no. 1 (September 19, 2021): 268. Accessed July 18, 2024. https://lockwoodonlinejournals.com/index.php/jaos/article/view/781.