@book{8216,
	author = {Nelson, Candice J., and ebrary, Inc.},
	title = {Shades of gray},
	publisher = {Brookings Institution Press,},
	year = {c2002.},
	address = {Washington, D.C. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10026288}
}