APA (7e ed.) Bronvermelding

Não informado. (1954). Records of the Geological Survey of Nigeria. Ministry of Mines and Power.

Chicago (17e ed.) Bronvermelding

Não informado. Records of the Geological Survey of Nigeria. Lagos: Ministry of Mines and Power, 1954.

MLA (8e ed.) Bronvermelding

Não informado. Records of the Geological Survey of Nigeria. Ministry of Mines and Power, 1954.

Let op: Deze citaties zijn niet altijd 100% accuraat.