@book{11998,
	author = {Spiegler, Michael D. and Guevremont, David C.,},
	title = {Contemporary behavior therapy /},
	publisher = {Thomson Learning Academic},
	year = {2002},
	address = {Belmont},
	edition = {Fourth edition},
	url = {http://www.loc.gov/catdir/enhancements/fy1515/2002107284-b.html}
}