APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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