APA (7th ed.) Zitazioa

United Nations. Economic Commission for Europe. (1993). Solar Power Systems. United Nations.

Chicago Style (17th ed.) Zitazioa

United Nations. Economic Commission for Europe. Solar Power Systems. New York: United Nations, 1993.

MLA (9th ed.) Zitazioa

United Nations. Economic Commission for Europe. Solar Power Systems. United Nations, 1993.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.