APA aipamena

United Nations. (1999). World investment report 1999. New York: United Nations.

Chicago Style aipamena

United Nations. World Investment Report 1999. New York: United Nations, 1999.

MLA aipamena

United Nations. World Investment Report 1999. New York: United Nations, 1999.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.