Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.