@book{80782,
	author = {Bird, Ronit},
	title = {Cálculo matemático : 100 puzles y juegos para sumar, restar, multiplicar y dividir},
	publisher = {Narcea Ediciones, },
	year = {2014},
	series = {Herramientas},
	address = {[Madrid, España] :},
	url = {https://public.digitaliapublishing.com/a/40884}
}