@book{180976,
	author = {Schwols, Amitra. and Dempsey, Kathleen, and ebrary, Inc.},
	title = {Common core standards for middle school mathematics},
	publisher = {ASCD,},
	year = {2013.},
	address = {Alexandria, Va. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10655845}
}