Cita APA (7th ed.)

HAY, W. W. (1977). An introduction to transportation engineering (2.). John Wiley & Sons.

Cita Chicago (17th ed.)

HAY, WILLIAN WALTER. An Introduction to Transportation Engineering. 2. New York: John Wiley & Sons, 1977.

Cita MLA (8th ed.)

HAY, WILLIAN WALTER. An Introduction to Transportation Engineering. 2. John Wiley & Sons, 1977.