Western State (Nigeria). Ministry of Economic Planning and Social Development. Statistics Division & Western State (Nigeria). Ministry of Economic Planning and Reconstruction. Statistics Division. (1968). Western State of Nigeria statistical abstract. The Division.
Cytowanie według stylu Chicago (wyd. 17)Western State (Nigeria). Ministry of Economic Planning and Social Development. Statistics Division i Western State (Nigeria). Ministry of Economic Planning and Reconstruction. Statistics Division. Western State of Nigeria Statistical Abstract. Ibadan: The Division, 1968.
Cytowanie według stylu MLA (wyd. 8)Western State (Nigeria). Ministry of Economic Planning and Social Development. Statistics Division i Western State (Nigeria). Ministry of Economic Planning and Reconstruction. Statistics Division. Western State of Nigeria Statistical Abstract. The Division, 1968.