Thomas A. Carlson (ed.), "Mar Aḥḥa" in last modified January 14, 2014, http://syriaca.org/place/2445
    
        
            
                
                    Mar Aḥḥa
                    Mār Aḥḥā
                    
                    
                        ʿAqrā region
                    
          
                    http://syriaca.org/place/2445
                    
                        David Wilmshurst
                        The Ecclesiastical Organisation of the Church of the East, 1318-1913
                        155, 157