Thomas A. Carlson (ed.), "Rabban Hormizd and Mar Giwargis" in last modified January 14, 2014, http://syriaca.org/place/2235
    
        
            
                
                    Rabban Hormizd and Mar Giwargis
                    Rabban Hormizd and Mār Gīwārgīs
                    
                    
                        Mardīn
                    
          
                    http://syriaca.org/place/2235
                    
                        David Wilmshurst
                        The Ecclesiastical Organisation of the Church of the East, 1318-1913
                        74, 75, 77, 78, 79, 91