APA

Metz H. C., Library of Congress, . (1992). Nigeria: a country study. Washington, D.C: For sale by the Supt. of Docs., U.S. G.P.O.

Chicago

Metz Helen Chapin, Library of Congress, . 1992. Nigeria: a country study. Washington, D.C: For sale by the Supt. of Docs., U.S. G.P.O.

Harvard

Metz H. C., Library of Congress, . (1992). Nigeria: a country study. Washington, D.C: For sale by the Supt. of Docs., U.S. G.P.O.

MLA

Metz Helen Chapin, Library of Congress, . Nigeria: a country study. Washington, D.C: For sale by the Supt. of Docs., U.S. G.P.O. 1992.