एपीए उद्धरण

Guthrie, J. (1971). A History of Marine Engineering. Hutchinson.

शिकागो स्टाइल उद्धरण

Guthrie, John. A History of Marine Engineering. London: Hutchinson, 1971.

एमएलए उद्धरण

Guthrie, John. A History of Marine Engineering. Hutchinson, 1971.