Fricker, J. D. (2004). Fundamentals of transportation engineeringa multimodal systems approach /Jon D. Fricker , Robert K. Whitford. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Fricker, Jon D. Fundamentals of Transportation Engineeringa Multimodal Systems Approach /Jon D. Fricker , Robert K. Whitford. Prentice Hall, 2004.
Lua MLA (8ú heag.)Fricker, Jon D. Fundamentals of Transportation Engineeringa Multimodal Systems Approach /Jon D. Fricker , Robert K. Whitford. Prentice Hall, 2004.
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