APA (7th ed.) Zitazioa
United Nations. Statistical Office. (1992). World statistics in brief: United Nations statistical pocketbook. United Nations.
Chicago Style (17th ed.) Zitazioa
United Nations. Statistical Office. World Statistics in Brief: United Nations Statistical Pocketbook. New York: United Nations, 1992.
MLA (9th ed.) Zitazioa
United Nations. Statistical Office. World Statistics in Brief: United Nations Statistical Pocketbook. United Nations, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.