APA (7th ed.) Zitazioa
Agricultural Chemicals Industry Yearbook. IHS, Inc.
Chicago Style (17th ed.) Zitazioa
Agricultural Chemicals Industry Yearbook. IHS, Inc.
MLA (9th ed.) Zitazioa
Agricultural Chemicals Industry Yearbook. IHS, Inc.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.