APA (7th ed.) Zitazioa

(2007). The state of agricultural commodity markets 2006.

Chicago Style (17th ed.) Zitazioa

The State of Agricultural Commodity Markets 2006. 2007.

MLA (9th ed.) Zitazioa

The State of Agricultural Commodity Markets 2006. 2007.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.