Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (8ú heag.)

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

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