Nathan P. Gibson, Vanessa Birkhahn and Hanna Friedel, (eds.), "Yazīd ibn Yūḥannā ibn Abī Khālid — يزيد بن يوحنا بن أبي خالد " 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/2321
   
      
         
            
               Yazīd ibn Yūḥannā ibn Abī Khālid
               يزيد بن يوحنا بن أبي خالد
               يريد بن يوحنا بن أبي خالد
               Yazīd ibn Yūḥannā ibn Abī Khālid, known as Yazīd Būr, personal physician to al-Maʾmūn and then Abū Isḥāq Ibrāhīm ibn al-Mahdī
               https://usaybia.net/person/2321
               https://onomasticon.irht.cnrs.fr/en/entry/id/4119
               
                  physician
               
               
                  Christian
               
               
                  A literary history of medicine: the 'Uyūn al-anbā' fī ṭabaqāt al-aṭibbā' of Ibn Abī Uṣaybi'ah
                  
                  8.13