Dyfyniad APA

(1978). Highway And The Environment Culloquium Held At The Institution Of Civil Engineers, London 4 November, 1976 Introduction Rj. Bridle. The Institution of Civil Engin.

Dyfyniad Arddull Chicago

Highway And The Environment Culloquium Held At The Institution Of Civil Engineers, London 4 November, 1976 Introduction Rj. Bridle. The Institution of Civil Engin, 1978.

Dyfyniad MLA

Highway And The Environment Culloquium Held At The Institution Of Civil Engineers, London 4 November, 1976 Introduction Rj. Bridle. The Institution of Civil Engin, 1978.

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