APA (7th ed.) Citation

Hay, W. W. (1977). An introduction to transportation engineering (2. ed.). Wiley.

Chicago Style (17th ed.) Citation

Hay, William W. An Introduction to Transportation Engineering. 2. ed. New York: Wiley, 1977.

MLA (9th ed.) Citation

Hay, William W. An Introduction to Transportation Engineering. 2. ed. Wiley, 1977.