@book{63573,
	author = {Hill, Michael J. and Hupe, Peter L.},
	title = {Implementing public policy  governance in theory and practice},
	publisher = {Sage},
	year = {2002},
	series = {Sage politics texts},
	address = {Londres (Inglaterra)},
	url = {http://www.loc.gov/catdir/enhancements/fy0658/2002101995-t.html}
}