@book{482940,
	author = {Schaffer, H. Rudolph. and Sage eBooks},
	title = {Key concepts in developmental psychology},
	publisher = {SAGE,},
	year = {2006.},
	address = {London :},
	url = {http://ezproxy.alfaisal.edu/login?url=http://sk.sagepub.com/books/key-concepts-in-developmental-psychology}
}