@book{30178,
	author = {Piaget, Jean,},
	title = {The language and thought of the child /},
	publisher = {Routledge & Kegan Paul ;},
	year = {1959 [reprinted 1965].},
	series = {(International library of psychology, philosophy and scientific methods)},
	address = {London ;},
	edition = {3.ed. [rev. and enl.}
}