WRIGHT, P. H. (2004). Highway engineering. John Wiley & Sons.
Cita Chicago (17th ed.)WRIGHT, Paul H. Highway Engineering. John Wiley & Sons, 2004.
Cita MLA (9th ed.)WRIGHT, Paul H. Highway Engineering. John Wiley & Sons, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.