@book{16711,
	author = {Patton, Michael Quinn.},
	title = {Utilization-focused evaluation :},
	publisher = {Sage Publications,},
	year = {c1997.},
	address = {Thousand Oaks ;},
	edition = {3rd ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0658/96025310-d.html}
}