Ugo Zanetti and Nathan P. Gibson (eds.), "New Light on the Text of the Canons in the Doctrine of Addai" in last modified January 4, 2016, http://syriaca.org/bibl/754
    
        
            
                
                    
                        A.
                        Vööbus
                    
                    New Light on the Text of the Canons in the Doctrine
                     of Addai
                    http://syriaca.org/bibl/754
                
                
                    Journal of the Syriac Academy
                    
                        1975
                    
                    1
                    3-21