APA aipamena

Knapp, W., & Barbour, N. (1977). North West Africa: A political and economic survey (3d ed.). Oxford University Press.

Chicago Style aipamena

Knapp, Wilfrid, and Nevill Barbour. North West Africa: A Political and Economic Survey. 3d ed. Oxford ; New York: Oxford University Press, 1977.

MLA aipamena

Knapp, Wilfrid, and Nevill Barbour. North West Africa: A Political and Economic Survey. 3d ed. Oxford University Press, 1977.