Ṣūfīsm in Sudan historical study, 1504-2024 - Abu-'l-Ḥasan, ʿAbd-al-Ǧalīl ʿAbdallāh Ṣāliḥ (Dār al-Muṣauwarāt li-n-Našr wa-'ṭ-Ṭibāʿa wa-'t-Tauzīʿ, 2024)