APA (7th ed.) Zitazioa

Against a Protective Tariff. Great Neck Publishing.

Chicago Style (17th ed.) Zitazioa

Against a Protective Tariff. Great Neck Publishing.

MLA (9th ed.) Zitazioa

Against a Protective Tariff. Great Neck Publishing.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.