Thomas A. Carlson (ed.), "Ḥarab Olmā" in last modified January 14, 2014, http://syriaca.org/place/1310
    
        
            
                
                    Ḥarab Olmā
                    
                    
                        Mardīn region
                    
          
                    http://syriaca.org/place/1310
                    
                        David Wilmshurst
                        The Ecclesiastical Organisation of the Church of the East, 1318-1913
                        42, 76, 80, 93-94, 216