@book{236870,
	author = {Szarota, Piotr,},
	title = {Sonrisa :},
	publisher = {Aresta ;},
	year = {2011.},
	series = {Comunicación y sociedad ;},
	address = {Bellcaire d'Empordà, Girona :},
	edition = {Primera edición en castellano. },
	note = {Translation of:  Smile: a user's manual. Bellcaire d'Empordà, Girona : Aresta, 2011.},
	url = {https://www.digitaliapublishing.com/a/20343/}
}