@book{21951,
	author = {Pérez Galdós, Benito, and Pérez Galdós, Benito,},
	title = {Juan Martin el Empecinado ;},
	publisher = {Porrúa },
	year = {1988.},
	series = {Sepan cuantos..;},
	address = {Mexico },
	edition = {2a ed.}
}