Cita APA (7th ed.)

Great Britain. Central Office of Information. Reference Division. (1974). Steel. H.M.S.O..

Cita Chicago (17th ed.)

Great Britain. Central Office of Information. Reference Division. Steel. London: H.M.S.O., 1974.

Cita MLA (8th ed.)

Great Britain. Central Office of Information. Reference Division. Steel. H.M.S.O., 1974.