@book{31755,
	author = {Zabala, Antoni and Arnau, Laia},
	title = {11 Ideas Clave: Cómo Aprender y Enseñar Competencias /},
	publisher = {Graó,},
	year = {2007.},
	series = {Colección Ideas Clave No.3},
	address = {Barcelona :}
}