@book{12183,
	author = {Unamuno, Miguel de, and Ereño Altuna, José Antonio.},
	title = {La unión constituye la fuerza ; },
	editor = {A.G. Rontegui)},
	publisher = {José Antonio Ereño Altuna, },
	year = {1994 (},
	address = {Bilbao : }
}