muʼallifah Muḥammad ʻAbdurrazāq Kānpūrī (1961) al-Barāmikah : K̲h̲alīfah Hārūnurrashīd ʻAbbāsī ke nāmvar vuzrā Yaḥyá, Faẓal, va Jaʻfar Barmakī kī mufaṣṣal savāniḥ ʻumrī. Nafīs Ikaiḍmī. ISBN: .