एपीए उद्धरण

Kenneth Warren. (1970). The British iron ans steel sheet industry since 1840. London: G. BEll & Sons, LTD.

शिकागो स्टाइल उद्धरण

Kenneth Warren. The British Iron Ans Steel Sheet Industry Since 1840. London: G. BEll & Sons, LTD, 1970.

एमएलए उद्धरण

Kenneth Warren. The British Iron Ans Steel Sheet Industry Since 1840. London: G. BEll & Sons, LTD, 1970.