@book{133562,
	author = {Danielson, Charlotte. and ebrary, Inc.},
	title = {Enhancing professional practice},
	publisher = {Association for Supervision and Curriculum Development,},
	year = {2007.},
	address = {Alexandria, Va. :},
	edition = {2nd ed.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10160242}
}