Dyfyniad APA

Penn, G. (1955). "Up funnel, down screw!": The story of the Naval Engineer. Hollis & Carter.

Dyfyniad Arddull Chicago

Penn, Geoffrey. "Up Funnel, Down Screw!": The Story of the Naval Engineer. London: Hollis & Carter, 1955.

Dyfyniad MLA

Penn, Geoffrey. "Up Funnel, Down Screw!": The Story of the Naval Engineer. Hollis & Carter, 1955.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.