APA (7th ed.) Zitazioa
Soil use and management [Soil Use Manag] NLMUID: 101690601.
Chicago Style (17th ed.) Zitazioa
Soil Use and Management [Soil Use Manag] NLMUID: 101690601.
MLA (9th ed.) Zitazioa
Soil Use and Management [Soil Use Manag] NLMUID: 101690601.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.