APA (7th ed.) Citation

Caldwell, J. C., & Okonjo, C. (1968). The population of tropical Africa / by John C. Caldwell and Chukuka Okonjo. Longmans.

Chicago Style (17th ed.) Citation

Caldwell, John C., and Chukuka Okonjo. The Population of Tropical Africa / by John C. Caldwell and Chukuka Okonjo. London: Longmans, 1968.

MLA (9th ed.) Citation

Caldwell, John C., and Chukuka Okonjo. The Population of Tropical Africa / by John C. Caldwell and Chukuka Okonjo. Longmans, 1968.

Warning: These citations may not always be 100% accurate.