@book{258702,
	title = {Puerto Rico},
	publisher = {U.S Department of Commerce, Economics and Statistics Administration, U.S. Census Bureau},
	year = {2012},
	address = {Washington DC},
	note = {Issued July 2012},
	url = {http://catalog.gpo.gov/fdlpdir/locate.jsp?ItemNumber=0159-C-53&SYS=000889278}
}