Cita APA (7th ed.)
Wright, P. H. (2004). Highway engineering (7th ed.). John Wiley.
Cita Chicago (17th ed.)
Wright, Paul H. Highway Engineering. 7th ed. New York: John Wiley, 2004.
Cita MLA (9th ed.)
Wright, Paul H. Highway Engineering. 7th ed. John Wiley, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.