APA (7th ed.) Zitazioa
Shapiro, I. (2003). The moral foundations of politics. Yale University Press.
Chicago Style (17th ed.) Zitazioa
Shapiro, Ian. The Moral Foundations of Politics. New Haven: Yale University Press, 2003.
MLA (9th ed.) Zitazioa
Shapiro, Ian. The Moral Foundations of Politics. Yale University Press, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.