Dyfyniad APA

National Research Council. (1993). Rigid and flexible pavement design and rehabilitation. Washington, D C : National Academy Pr.

Dyfyniad Arddull Chicago

National Research Council. Rigid and Flexible Pavement Design and Rehabilitation. Washington, D C : National Academy Pr, 1993.

Dyfyniad MLA

National Research Council. Rigid and Flexible Pavement Design and Rehabilitation. Washington, D C : National Academy Pr, 1993.

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