APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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