@Book{RAJ20140000845, title = "Tratado de los delitos y de las penas", author = "Beccaria, Cesare (1738-1794)", publisher = "Madrid : [s.n.]", editor = "[s.n.]", url = "http://bvrajyl.rajyl.es/i18n/consulta/registro.cmd?id=9819", year = "1820", }