APA (7th ed.) Zitazioa
ebrary, Inc, & Heckrath, G. (2005). Tools for assessing phosphorus loss from Nordic agriculture. Nordic Council of Ministers.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, eta Goswin Heckrath. Tools for Assessing Phosphorus Loss from Nordic Agriculture. Copenhagen: Nordic Council of Ministers, 2005.
MLA (9th ed.) Zitazioa
ebrary, Inc, eta Goswin Heckrath. Tools for Assessing Phosphorus Loss from Nordic Agriculture. Nordic Council of Ministers, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.