@book{51878,
	author = {Royse, David D.  and Thyer, Bruce A.},
	title = {Program evaluation :},
	publisher = {Wadsworth  Cengage Learning,},
	year = {2010.},
	address = {Australia ;  },
	edition = {5th edition},
	url = {http://www.loc.gov/catdir/enhancements/fy1104/2008943608-b.html}
}