Dyfyniad APA

Wright, P. H., & Paquette, J. R. (1987). Highway Engineering (5th ed.). John Wiley.

Dyfyniad Arddull Chicago

Wright, Paul H., and J. Radnor Paquette. Highway Engineering. 5th ed. New York: John Wiley, 1987.

Dyfyniad MLA

Wright, Paul H., and J. Radnor Paquette. Highway Engineering. 5th ed. John Wiley, 1987.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.