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Lua i Stíl Chicago (17ú heag.)Western State (Nigeria). Ministry of Economic Planning and Social Development. Statistics Division agus Western State (Nigeria). Ministry of Economic Planning and Reconstruction. Statistics Division. Western State of Nigeria Statistical Abstract. Ibadan: The Division, 1968.
Lua MLA (8ú heag.)Western State (Nigeria). Ministry of Economic Planning and Social Development. Statistics Division agus Western State (Nigeria). Ministry of Economic Planning and Reconstruction. Statistics Division. Western State of Nigeria Statistical Abstract. The Division, 1968.