Cita APA (7th ed.)

Cook, C., & David Killingray. (1991). African political facts since 1945. Facts on File.

Cita Chicago (17th ed.)

Cook, Chris;, i David Killingray. African Political Facts Since 1945. New York: Facts on File, 1991.

Cita MLA (9th ed.)

Cook, Chris;, i David Killingray. African Political Facts Since 1945. Facts on File, 1991.