@book{212249,
	author = {U.S. Citizenship and Immigration Services. and U.S. Citizenship and Immigration Services.},
	title = {Learn about the United States},
	publisher = {U.S. Dept. of Homeland Security, U.S. Citizenship and Immigration Services},
	year = {[2009]},
	address = {[Washington, D.C.]},
	edition = {Rev. 02/09.},
	note = {Title from title screen (viewed on Apr. 23, 2009).},
	url = {http://purl.access.gpo.gov/GPO/LPS111838}
}