APA (7th ed.) Citation

African Population Conference University of Ibadan, University of Ibadan, Population Council, Caldwell, J. C., & Okonjo, C. (1968). The population of tropical Africa. Columbia University Press.

Chicago Style (17th ed.) Citation

African Population Conference University of Ibadan, University of Ibadan, Population Council, John C. Caldwell, and Chukuka Okonjo. The Population of Tropical Africa. New York: Columbia University Press, 1968.

MLA (8th ed.) Citation

African Population Conference University of Ibadan, et al. The Population of Tropical Africa. Columbia University Press, 1968.