Dyfyniad APA

Reference Division Central Office of Information. (1974). Steel. London: Her Majesty's Stationery Office.

Dyfyniad Arddull Chicago

Reference Division Central Office of Information. Steel. London: Her Majesty's Stationery Office, 1974.

Dyfyniad MLA

Reference Division Central Office of Information. Steel. London: Her Majesty's Stationery Office, 1974.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.