American University (Washington, D.C.). Foreign Area Studies, & Nelson, H. D. (1972). Area handbook for Nigeria (Rev. 3rd ed.). For sale by the Supt. of Docs., U.S. G.P.O..
Lua i Stíl Chicago (17ú heag.)American University (Washington, D.C.). Foreign Area Studies, agus Harold D. Nelson. Area Handbook for Nigeria. Rev. 3rd ed. Washington, D.C.: For sale by the Supt. of Docs., U.S. G.P.O., 1972.
Lua MLA (8ú heag.)American University (Washington, D.C.). Foreign Area Studies, agus Harold D. Nelson. Area Handbook for Nigeria. Rev. 3rd ed. For sale by the Supt. of Docs., U.S. G.P.O., 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.