APA (7th ed.) Zitazioa
Oruka, H. (1990). Ethics: A basic course for undergraduate studies. Nairobi University Press.
Chicago Style (17th ed.) Zitazioa
Oruka, H.O. Ethics: A Basic Course for Undergraduate Studies. Nairobi: Nairobi University Press, 1990.
MLA (9th ed.) Zitazioa
Oruka, H.O. Ethics: A Basic Course for Undergraduate Studies. Nairobi University Press, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.