Dyfyniad APA

Lamm, R. (1999). Highway design and traffic safety engineering handbook. New York: McGraw-Hill.

Dyfyniad Arddull Chicago

Lamm, Ruediger. Highway Design and Traffic Safety Engineering Handbook. New York: McGraw-Hill, 1999.

Dyfyniad MLA

Lamm, Ruediger. Highway Design and Traffic Safety Engineering Handbook. New York: McGraw-Hill, 1999.

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