Cita APA

United Nations. (1957). The United Nations seminar on industrial statistics, 6-31 May 1957, Athens, Greece. s.n.

Citación estilo Chicago

United Nations. The United Nations Seminar on Industrial Statistics, 6-31 May 1957, Athens, Greece. [New York: s.n, 1957.

Cita MLA

United Nations. The United Nations Seminar on Industrial Statistics, 6-31 May 1957, Athens, Greece. s.n, 1957.