Ugo Zanetti and Nathan P. Gibson (eds.), "Historia dos martyres de Nagran" in Historia dos martyres de Nagran last modified January 4, 2016, http://syriaca.org/bibl/1010
    
        
            
                
                    
                        F. M.
                        Esteves Pereira
                    
                    Historia dos martyres de Nagran
                    http://syriaca.org/bibl/1010
                    
                        Lisbonne
                        1899