APA (7th ed.) Zitazioa
Kitcher, P. (2011). The ethical project. Harvard University Press.
Chicago Style (17th ed.) Zitazioa
Kitcher, Philip. The Ethical Project. Cambridge, Mass.: Harvard University Press, 2011.
MLA (9th ed.) Zitazioa
Kitcher, Philip. The Ethical Project. Harvard University Press, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.