@book{123733,
	author = {Ginsburg, Herbert. and Brandt, Sylvia Opper},
	title = {Piaget y la teoria del desarrollo intelectual},
	publisher = {Editorial Prentice/Hall Internacional},
	year = {c1977.},
	address = {Englewood Cliffs, N.J.},
	note = {Translation of Piaget's theory of intellectual development.}
}