Thomas A. Carlson (ed.), "Mar Petion" in last modified January 14, 2014, http://syriaca.org/place/2481
    
        
            
                
                    Mar Petion
                    Mār Peṯiōn
                    
                    
                        Ḥarab Olmā
                        Mardīn region
                    
          
                    http://syriaca.org/place/2481
                    
                        David Wilmshurst
                        The Ecclesiastical Organisation of the Church of the East, 1318-1913
                        56, 76, 80-81, 93, 350, 353, 354, 358