एपीए उद्धरण

Higgins, R. A. (1987). Engineering metallurgy. ELBS.

शिकागो स्टाइल उद्धरण

Higgins, Raymond A. Engineering Metallurgy. London: ELBS, 1987.

एमएलए उद्धरण

Higgins, Raymond A. Engineering Metallurgy. ELBS, 1987.