@book{236340,
	author = {Martínez Ruiz, Enrique. and Pi Corrales, Magdalena,},
	title = {Las Guardas de Castilla :},
	publisher = {Sílex,},
	year = {2012.},
	series = {Sílex universidad.},
	address = {Madrid :},
	url = {https://www.digitaliapublishing.com/a/19217/}
}