Thomas A. Carlson (ed.), "Mar Ishaʿya" in last modified December 9, 2016, http://syriaca.org/place/1996
    
        
            
                
                    Mar Ishaʿya
                    Mār Ishaʿyā
                    Mar Ishaya
                    Mar Isha‘ya
                    Mār Ishayā
                    Mār Isha‘yā
                    
                    
                        Geznakh
                    
          
                    http://syriaca.org/place/1996
                    
                        David Wilmshurst
                        The Ecclesiastical Organisation of the Church of the East, 1318-1913
                        123-124