@book{153604,
	author = {Irving, Ron. and ebrary, Inc.},
	title = {Beyond the quadratic formula},
	publisher = {Mathematical Association of America,},
	year = {2013.},
	series = {Classroom resource materials},
	address = {Washington, D.C. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10722472}
}