APA aipamena

Westermann, D., Smith, E. W., & Forde, D. (1928). Africa. London: Oxford University Press.

Chicago Style aipamena

Westermann, Diedrich, Edwin William Smith, and Daryll Forde. Africa. London: Oxford University Press, 1928.

MLA aipamena

Westermann, Diedrich, Edwin William Smith, and Daryll Forde. Africa. London: Oxford University Press, 1928.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.