@book{87646,
	author = {Lang, Norma C. and ebrary, Inc.},
	title = {Group work practice to advance social competence},
	publisher = {Columbia University Press,},
	year = {c2010.},
	address = {New York, NY :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10413093}
}