APA aipamena

United Nations. Statistical Office. (1950). Studies in methods (no. 1.). [s.n.].

Chicago Style aipamena

United Nations. Statistical Office. Studies in Methods. no. 1. New York: [s.n.], 1950.

MLA aipamena

United Nations. Statistical Office. Studies in Methods. no. 1. [s.n.], 1950.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.