@book{230113,
	author = {Ayala Martínez, Carlos de.},
	title = {Sacerdocio y Reino en la España Altomedieval :},
	publisher = {Sílex,},
	year = {2008.},
	series = {Serie Historia medieval},
	address = {Madrid :},
	url = {https://www.digitaliapublishing.com/a/1275/}
}