@book{31957,
	author = {Shaffer, David R.},
	title = {Developmental Psychology Childhood and Adolescence /},
	publisher = {Wadsworth/Thomson Learning,},
	year = {2002},
	address = {Belmont, CA :},
	edition = {6th ed.},
	url = {http://10.13.12.226/cgi-bin/image_eng/cover_page/0534572146.gif}
}