@book{80023,
	author = {Metz, Helen Chapin and Library of Congress.},
	title = {Nigeria},
	publisher = {For sale by the Supt. of Docs., U.S. G.P.O.},
	year = {1992.},
	series = {Area handbook series},
	address = {Washington, D.C.},
	edition = {5th ed.},
	note = {"Research completed December 1990."}
}