@book{87540,
	author = {Osoro Igartua, Jasone},
	title = {Eskularru beltzak. Ikasbidaia :},
	publisher = {Elkar, },
	year = {[Fecha de publicación no identificada]},
	series = {Eskularru beltzak},
	address = {[Madrid, España] :},
	url = {https://public.digitaliapublishing.com/a/97002}
}