@book{255971,
	author = {Rossi, Peter H. and Freeman, Howard E.},
	title = {Evaluation :},
	publisher = {Sage Publications,},
	year = {©1999.},
	address = {Thousand Oaks, Calif. :},
	edition = {6th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0656/98040244-d.html}
}