Ugo Zanetti and Nathan P. Gibson (eds.), "O santo martyr Barlaam. Estudo de crítica histórica" in O santo martyr Barlaam. Estudo de crítica histórica last modified January 4, 2016, http://syriaca.org/bibl/823
    
        
            
                
                    
                        F.M.E.
                        Pereira
                    
                    O santo martyr Barlaam. Estudo de crítica
                     histórica
                    http://syriaca.org/bibl/823
                    
                        Coimbra
                        1901