Não informado. (1954). Records of the Geological Survey of Nigeria. Ministry of Mines and Power.
Style de citation Chicago (17e éd.)Não informado. Records of the Geological Survey of Nigeria. Lagos: Ministry of Mines and Power, 1954.
Style de citation MLA (8e éd.)Não informado. Records of the Geological Survey of Nigeria. Ministry of Mines and Power, 1954.
Attention : ces citations peuvent ne pas être correctes à 100%.