APA (7th ed.) Zitazioa
(2001). Sweden, Switzerland. OECD Publications Services.
Chicago Style (17th ed.) Zitazioa
Sweden, Switzerland. Paris, France: OECD Publications Services, 2001.
MLA (9th ed.) Zitazioa
Sweden, Switzerland. OECD Publications Services, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.