APA (7th ed.) Citation

Seligman, C. G. (1966). Races of Africa (4th ed.). Oxford University Press.

Chicago Style (17th ed.) Citation

Seligman, C. G. Races of Africa. 4th ed. London ; New York: Oxford University Press, 1966.

MLA (9th ed.) Citation

Seligman, C. G. Races of Africa. 4th ed. Oxford University Press, 1966.