Reference Division Central Office of Information. (1974). Steel. London: Her Majesty's Stationery Office.
استشهاد بنمط شيكاغوReference Division Central Office of Information. Steel. London: Her Majesty's Stationery Office, 1974.
MLA استشهادReference Division Central Office of Information. Steel. London: Her Majesty's Stationery Office, 1974.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.