@book{112006,
	author = {Delisle, Robert, and Association for Supervision and Curriculum Development.},
	title = {How to use problem-based learning in the classroom},
	publisher = {ASCD,},
	year = {c1997.},
	address = {Alexandria, Va., USA :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10120222}
}