Thomas A. Carlson (ed.), "Ḥṭārā" in last modified January 14, 2014, http://syriaca.org/place/1339
    
        
            
                
                    Ḥṭārā
                    Ḥetrā
                    
                    
                        Shemkān district
                        ʿAmādīyā region
                    
          
                    http://syriaca.org/place/1339
                    
                        David Wilmshurst
                        The Ecclesiastical Organisation of the Church of the East, 1318-1913
                        133, 144, 147, 155, 156, 157