Cita APA (7th ed.)

Krabacher, T., Kalipeni, E., & Layachi, A. (2009). Africa (12th ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Krabacher, Thomas, Ezekiel Kalipeni, i Azzedine Layachi. Africa. 12th ed. Boston: McGraw-Hill, 2009.

Cita MLA (9th ed.)

Krabacher, Thomas, et al. Africa. 12th ed. McGraw-Hill, 2009.