Thomas A. Carlson (ed.), "Gweṣṣā" in last modified January 14, 2014, http://syriaca.org/place/1252
    
        
            
                
                    Gweṣṣā
                    
                    
                        Naḥlā district
                        ʿAqrā region
                    
          
                    http://syriaca.org/place/1252
                    
                        David Wilmshurst
                        The Ecclesiastical Organisation of the Church of the East, 1318-1913
                        126, 154, 158, 163, 264, 265