@book{3796,
	author = {Piaget, Jean,  and Ferrerio, Emilia.},
	title = {Introducción a la epistemología genética :},
	publisher = {Editorial Paidos, },
	year = {1978.},
	series = {Paidos psicología evolutiva ; },
	address = {Buenos Aires : },
	edition = {2a. ed.},
	note = {Incluye indice.}
}