Dyfyniad APA

Wright, P. H., Ashford, N. J., & Stammer, R. J. (1998). Transportation engineering: Planing and design (4th ed.). New York: John Wiley and Sons.

Dyfyniad Arddull Chicago

Wright, Paul H., Norman J. Ashford, và Robert J. Stammer. Transportation Engineering: Planing and Design. 4th ed. New York: John Wiley and Sons, 1998.

Dyfyniad MLA

Wright, Paul H., Norman J. Ashford, và Robert J. Stammer. Transportation Engineering: Planing and Design. 4th ed. New York: John Wiley and Sons, 1998.

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