Dyfyniad APA

Wright, P. H. (1996). Highway engineering (6th ed.). New York: John Wiley and Sons.

Dyfyniad Arddull Chicago

Wright, Paul H. Highway Engineering. 6th ed. New York: John Wiley and Sons, 1996.

Dyfyniad MLA

Wright, Paul H. Highway Engineering. 6th ed. New York: John Wiley and Sons, 1996.

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