APA (7th ed.) Citation

Gann, L. H., & Duignan, P. (1977). White settlers in tropical Africa. Greenwood Press.

Chicago Style (17th ed.) Citation

Gann, Lewis H., and Peter Duignan. White Settlers in Tropical Africa. Westport, Conn.: Greenwood Press, 1977.

MLA (9th ed.) Citation

Gann, Lewis H., and Peter Duignan. White Settlers in Tropical Africa. Greenwood Press, 1977.