@book{1550,
	author = {Ardagh, Philip and Gordon, Mike},
	title = {Caballeros y castillos},
	publisher = {La Galera},
	year = {2011},
	series = {La casa de Álex},
	address = {Bogotá},
	edition = {Primera edición},
	note = {Incluye glosario e índice}
}