@book{168,
	author = {Shaffer, David R.},
	title = {Developmental psychology :},
	publisher = {Wadsworth Thomson Learning,},
	year = {[2002]},
	address = {Australia ;},
	edition = {1st canadian ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy1515/2001045460-b.html}
}