Nathan P. Gibson, Vanessa Birkhahn and Hanna Friedel, (eds.), "Abū l-Ḥākim Isḥāq ibn Yūḥannā — أبو الحاكم إسحاق بن يوحنا " in Communities of Knowledge: Interreligious Networks of Scholars in Ibn Abi Usaybiʿa’s History of the Physicians last modified June 23, 2021, https://usaybia.net/person/187 Abū l-Ḥākim Isḥāq ibn Yūḥannā أبو الحاكم إسحاق بن يوحنا Abū l-Ḥākim Isḥāq ibn Yūḥannā, physician from Ahwāz, https://usaybia.net/person/187 physician Christian A literary history of medicine: the 'Uyūn al-anbā' fī ṭabaqāt al-aṭibbā' of Ibn Abī Uṣaybi'ah 11.16 no. 1.33