APA (7th ed.) Zitazioa
Pritchard,John M. (1979). Africa: Study geography for advanced students (3thd ed.). Longman.
Chicago Style (17th ed.) Zitazioa
Pritchard,John M. Africa: Study Geography for Advanced Students. 3thd ed. Burnt: Longman, 1979.
MLA (9th ed.) Zitazioa
Pritchard,John M. Africa: Study Geography for Advanced Students. 3thd ed. Longman, 1979.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.