@book{124921,
	author = {Fisher, Douglas, and Frey, Nancy, and ebrary, Inc.},
	title = {Checking for understanding},
	publisher = {Association for Supervision and Curriculum Development,},
	year = {c2007.},
	address = {Alexandria, VA :},
	url = {http://site.ebrary.com/lib/strathmore/Doc?id=10191380}
}