APA (7th ed.) Citation

United States. Federal Highway Administration. (2009). Rectangular rapid flash beacon (RRFB). U.S. Dept. of Transportation, Federal Highway Administration.

Chicago Style (17th ed.) Citation

United States. Federal Highway Administration. Rectangular Rapid Flash Beacon (RRFB). [Washington, D.C.]: U.S. Dept. of Transportation, Federal Highway Administration, 2009.

MLA (9th ed.) Citation

United States. Federal Highway Administration. Rectangular Rapid Flash Beacon (RRFB). U.S. Dept. of Transportation, Federal Highway Administration, 2009.