@book{261507,
	author = {U.S. Citizenship and Immigration Services,},
	title = {Tarjetas de educaci�on c�ivica para el examen de naturalizac�ion.},
	publisher = {U.S. Department of Homeland Security, U.S. Citizenship and Immigration Services},
	address = {[Washington, D.C.] :},
	note = {"M-623-S."}
}