@book{71428,
	author = {Sierra i Fabra, Jordi and Sierra i Fabra, Jordi},
	title = {Una dulce historia de mariposas y libélulas},
	publisher = {Siruela, },
	year = {2011},
	series = {Las tres edades},
	address = {[Madrid, España] :},
	url = {https://public.digitaliapublishing.com/a/38426}
}