@book{222486,
	author = {United States},
	title = {NATO enlargement},
	publisher = {U.S. G.P.O.},
	year = {2011.},
	address = {Washington},
	note = {Shipping list no.: 2011-0199-P.},
	url = {http://purl.fdlp.gov/GPO/gpo5488}
}