APA (7th ed.) Zitazioa

Crop and Pasture Science. Cambridge University Press.

Chicago Style (17th ed.) Zitazioa

Crop and Pasture Science. Cambridge University Press.

MLA (9th ed.) Zitazioa

Crop and Pasture Science. Cambridge University Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.