@book{71520,
	author = {Sloan, Robin and Sloan, Robin},
	title = {El Sr. Penumbra y su librería 24 horas abierta},
	publisher = {Roca Editorial, },
	year = {2013},
	address = {[Madrid, España] :},
	url = {https://public.digitaliapublishing.com/a/34485}
}