Dyfyniad APA

Institution of Civil Engineers (Great Britain). (1969). An introduction to engineering economics. (Great George St., S.W.1), Institution of Civil Engineers.

Dyfyniad Arddull Chicago

Institution of Civil Engineers (Great Britain). An Introduction to Engineering Economics. London: (Great George St., S.W.1), Institution of Civil Engineers, 1969.

Dyfyniad MLA

Institution of Civil Engineers (Great Britain). An Introduction to Engineering Economics. (Great George St., S.W.1), Institution of Civil Engineers, 1969.

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