@book{21804,
	author = {Pérez Galdós, Benito,},
	title = {El 19 de marzo y el 2 de mayo ;},
	publisher = {Porrúa },
	year = {1994.},
	series = {Sepan cuantos; },
	address = {México },
	edition = {3a ed.},
	note = {Incluye índice}
}