@book{3727,
	author = {Porter, Michael E.,},
	title = {The competitive advantage of nations :},
	publisher = {Free Press,},
	year = {c1998.},
	address = {New York :},
	note = {Originally published: c1990.},
	url = {http://www.loc.gov/catdir/bios/simon051/98009584.html}
}