APA (7th ed.) Citation

Ogbonna, O. D. (1979). The geographic consequences of petroleum in Nigeria with special reference to the Rivers State. [publisher not identified].

Chicago Style (17th ed.) Citation

Ogbonna, Okoro David. The Geographic Consequences of Petroleum in Nigeria with Special Reference to the Rivers State. [Place of publication not identified]: [publisher not identified], 1979.

MLA (9th ed.) Citation

Ogbonna, Okoro David. The Geographic Consequences of Petroleum in Nigeria with Special Reference to the Rivers State. [publisher not identified], 1979.