Dyfyniad APA

Ritter, L. J., & Paquette, R. J. (1967). Highway engineering (3rd ed.). Ronald Press.

Dyfyniad Arddull Chicago

Ritter, Leo John, and Radnor J. Paquette. Highway Engineering. 3rd ed. New York: Ronald Press, 1967.

Dyfyniad MLA

Ritter, Leo John, and Radnor J. Paquette. Highway Engineering. 3rd ed. Ronald Press, 1967.

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