एपीए उद्धरण

Knowles, P. (1977). Design of Structural Steelwork. Surrey university.

शिकागो स्टाइल उद्धरण

Knowles, Peter. Design of Structural Steelwork. London: Surrey university, 1977.

एमएलए उद्धरण

Knowles, Peter. Design of Structural Steelwork. Surrey university, 1977.