Thomas A. Carlson (ed.), "Mar Yoḥannan the Egyptian" in last modified April 25, 2014, http://syriaca.org/place/2502
    
        
            
                
                    Mar Yoḥannan the Egyptian
                    Mār Yōḥannān the Egyptian
                    Mar John the Egyptian
                    Ḥlaḥlaḥ
                    
                    
                        Tigris Valley
                        Gāzartā region
                    
          
                    http://syriaca.org/place/2502
                    http://www.csc.org.il/db/browse.aspx?db=SB&sL=M&sK=Mar%20John%20the%20Egyptian&sT=keywords
                    
                        David Wilmshurst
                        The Ecclesiastical Organisation of the Church of the East, 1318-1913
                        20, 69, 109, 110, 113, 114, 116, 349, 353, 354, 358
                        
                    
                    
                        The Comprehensive Bibliography on Syriac Christianity
                        
                        Mar John the Egyptian