Dyfyniad APA

(1978). Manual on uniform traffic control devices for streets and highways. Washington, D C: U S Department of Transportation.

Dyfyniad Arddull Chicago

Manual on Uniform Traffic Control Devices for Streets and Highways. Washington, D C: U S Department of Transportation, 1978.

Dyfyniad MLA

Manual on Uniform Traffic Control Devices for Streets and Highways. Washington, D C: U S Department of Transportation, 1978.

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