APA (7th ed.) Zitazioa
Agricultural Products Industry Profile: South America. GlobalData Ltd.
Chicago Style (17th ed.) Zitazioa
Agricultural Products Industry Profile: South America. GlobalData Ltd.
MLA (9th ed.) Zitazioa
Agricultural Products Industry Profile: South America. GlobalData Ltd.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.