@book{47417,
	author = {Wiggins, Grant P., and McTighe, Jay.},
	title = {Understanding by design /},
	publisher = {Association for Supervision and Curriculum Development,},
	year = {c2005.},
	address = {Alexandria, VA :},
	edition = {Expanded Second edition.},
	url = {http://www.loc.gov/catdir/toc/ecip0422/2004021131.html}
}