एपीए उद्धरण

William T. Hogan. (1972). The 1970s: Critical years for steel. Toronto: Lexington.

शिकागो स्टाइल उद्धरण

William T. Hogan. The 1970s: Critical Years for Steel. Toronto: Lexington, 1972.

एमएलए उद्धरण

William T. Hogan. The 1970s: Critical Years for Steel. Toronto: Lexington, 1972.