Cita APA (7th ed.)

United States. Federal Highway Administration. Implementation Division. (1985). Traffic control systems handbook: Revised, April 1985. The Administration : U.S. Govt. Print. Off.

Cita Chicago (17th ed.)

United States. Federal Highway Administration. Implementation Division. Traffic Control Systems Handbook: Revised, April 1985. Washington: The Administration : U.S. Govt. Print. Off, 1985.

Cita MLA (9th ed.)

United States. Federal Highway Administration. Implementation Division. Traffic Control Systems Handbook: Revised, April 1985. The Administration : U.S. Govt. Print. Off, 1985.