@book{480100,
	author = {Nagel, Stuart S., and Sage eBooks},
	title = {Handbook of public policy evaluation},
	publisher = {SAGE,},
	year = {c2002.},
	address = {Thousand Oaks, [Calif.] ;},
	url = {http://methods.sagepub.com/book/handbook-of-public-policy-evaluation}
}