Dyfyniad APA

Hay, W. W. (1961). An Introduction to tansportation engineering. John Wiley.

Dyfyniad Arddull Chicago

Hay, William W. An Introduction to Tansportation Engineering. NewYork: John Wiley, 1961.

Dyfyniad MLA

Hay, William W. An Introduction to Tansportation Engineering. John Wiley, 1961.

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