APA (7th ed.) Zitazioa
Organisation for Economic Co-operation and Development. (1980). Denmark: 1980. OECD Publishing.
Chicago Style (17th ed.) Zitazioa
Organisation for Economic Co-operation and Development. Denmark: 1980. Paris: OECD Publishing, 1980.
MLA (9th ed.) Zitazioa
Organisation for Economic Co-operation and Development. Denmark: 1980. OECD Publishing, 1980.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.