APA aipamena

United Nations. Economic Commission for Europe Geneva. (1972). Economic survey of Europe in 1971. United Nations Publication.

Chicago Style aipamena

United Nations. Economic Commission for Europe Geneva. Economic Survey of Europe in 1971. New York: United Nations Publication, 1972.

MLA aipamena

United Nations. Economic Commission for Europe Geneva. Economic Survey of Europe in 1971. United Nations Publication, 1972.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.