@book{20940,
	author = {Wood, David and Bárcena Montañez, Agustín,},
	title = {Cómo Piensan y Aprenden los Niños: Contextos Sociales del Desarrollo Cognoscitivo /},
	publisher = {Siglo XXI Editores,},
	year = {2005.},
	address = {México :},
	edition = {2.}
}