APA (7th ed.) Zitazioa
Cole, S. M. (1954). The prehistory of East Africa. Penguin Books.
Chicago Style (17th ed.) Zitazioa
Cole, Sonia Mary. The Prehistory of East Africa. Harmondsworth, Middlesex, U.K.: Penguin Books, 1954.
MLA (9th ed.) Zitazioa
Cole, Sonia Mary. The Prehistory of East Africa. Penguin Books, 1954.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.