@book{35690,
	author = {Pérez Galdós, Benito,},
	title = {Marianela /},
	publisher = {Espasa Calpe Mexicana, S.A. },
	year = {1990.},
	series = {Coleccion Austral ;},
	address = {Mexico },
	edition = {31a. ed.},
	note = {Escuela Secundaria Isaac Newton }
}