@book{60519,
	author = {Pérez Galdós, Benito, and Murillo Ospina, Javier Hernando},
	title = {Marianela /},
	publisher = {Panamericana,},
	year = {2009},
	series = {Literatura universal},
	address = {Bogotá, Colombia :},
	edition = {Primera edición},
	note = {Incluye datos biográficos del autor}
}