APA (7th ed.) Zitazioa

Federal Ministry of Consumer Protection, Food and Agriculture. (2003). Federal Organic Farming Scheme.

Chicago Style (17th ed.) Zitazioa

Federal Ministry of Consumer Protection, Food and Agriculture. Federal Organic Farming Scheme. 2003.

MLA (9th ed.) Zitazioa

Federal Ministry of Consumer Protection, Food and Agriculture. Federal Organic Farming Scheme. 2003.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.