Dyfyniad APA

(1977). Institution of Mechanical Engineers. Mechanical engineering Publications.

Dyfyniad Arddull Chicago

Institution of Mechanical Engineers. London: Mechanical engineering Publications, 1977.

Dyfyniad MLA

Institution of Mechanical Engineers. Mechanical engineering Publications, 1977.

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