APA (7th ed.) Zitazioa
Huebert, J. H. (2010). Libertarianism today. Praeger.
Chicago Style (17th ed.) Zitazioa
Huebert, Jacob H. Libertarianism Today. Santa Barbara, Calif.: Praeger, 2010.
MLA (9th ed.) Zitazioa
Huebert, Jacob H. Libertarianism Today. Praeger, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.