APA (7th ed.) Citation

Hay, W. W. An introduction to transportation engineering /$cWilliam W. Hay (2nd ed.).

Chicago Style (17th ed.) Citation

Hay, William W. An Introduction to Transportation Engineering /$cWilliam W. Hay. 2nd ed. New York :$bWiley,$c1977.

MLA (9th ed.) Citation

Hay, William W. An Introduction to Transportation Engineering /$cWilliam W. Hay. 2nd ed.