APA (7th ed.) Zitazioa
Leoni, B. (1991). Freedom and the law (Expanded 3rd ed.). Liberty Fund.
Chicago Style (17th ed.) Zitazioa
Leoni, Bruno. Freedom and the Law. Expanded 3rd ed. Indianapolis: Liberty Fund, 1991.
MLA (9th ed.) Zitazioa
Leoni, Bruno. Freedom and the Law. Expanded 3rd ed. Liberty Fund, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.