Não informado. (1954). Records of the Geological Survey of Nigeria. Ministry of Mines and Power.
Citace podle Chicago (17th ed.)Não informado. Records of the Geological Survey of Nigeria. Lagos: Ministry of Mines and Power, 1954.
Citace podle MLA (8th ed.)Não informado. Records of the Geological Survey of Nigeria. Ministry of Mines and Power, 1954.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..