APA (7th ed.) Citation

Simpson, A. (1954). The Nigerian coalfield: The geology of parts of Onitsha, Owerri, and Benue Provinces. By authority of the Nigerian Govt..

Chicago Style (17th ed.) Citation

Simpson, A. The Nigerian Coalfield: The Geology of Parts of Onitsha, Owerri, and Benue Provinces. [Zaria]: By authority of the Nigerian Govt., 1954.

MLA (8th ed.) Citation

Simpson, A. The Nigerian Coalfield: The Geology of Parts of Onitsha, Owerri, and Benue Provinces. By authority of the Nigerian Govt., 1954.