APA (7th ed.) Zitazioa
Ullendorff, E. (1960). The Ethiopians: An introd. to country and people. Oxford Univ. Press.
Chicago Style (17th ed.) Zitazioa
Ullendorff, Edward. The Ethiopians: An Introd. to Country and People. London [usw.]: Oxford Univ. Press, 1960.
MLA (9th ed.) Zitazioa
Ullendorff, Edward. The Ethiopians: An Introd. to Country and People. Oxford Univ. Press, 1960.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.