@book{189500,
	author = {Shanley, Robert A.},
	title = {Presidential influence and environmental policy /},
	publisher = {Greenwood Press,},
	year = {1992.},
	address = {Westport, Conn. :},
	url = {http://www.loc.gov/catdir/enhancements/fy1510/92015584-b.html}
}