(1978). Manual on uniform traffic control devices for streets and highways. Washington, D C: U S Department of Transportation.
Cita Chicago Style (17a ed.)Manual on Uniform Traffic Control Devices for Streets and Highways. Washington, D C: U S Department of Transportation, 1978.
Cita MLA (9a ed.)Manual on Uniform Traffic Control Devices for Streets and Highways. Washington, D C: U S Department of Transportation, 1978.
Precaución: Estas citas no son 100% exactas.