@book{67098,
	author = {Sutherland, Rosamund, and ebrary, Inc.},
	title = {Perspectives on school algebra},
	publisher = {Kluwer Academic Publishers,},
	year = {c2002.},
	series = {Mathematics education library ;},
	address = {New York :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10051656}
}