@book{68546,
	author = {Bronfenbrenner, Urie, and ebrary, Inc.},
	title = {The ecology of human development},
	publisher = {Harvard University Press,},
	year = {1996.},
	address = {Cambridge, MA :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10331287}
}