American Association of State Highway and Transportation Officials. Subcommittee on Bridges and Structures. Standard specifications for structural supports for highway signs, luminaires and traffic signals. American Association of State Highway and Transportation Officials.
Chicago Style (17th ed.) CitationAmerican Association of State Highway and Transportation Officials. Subcommittee on Bridges and Structures. Standard Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals. Washington: American Association of State Highway and Transportation Officials.
MLA (9th ed.) CitationAmerican Association of State Highway and Transportation Officials. Subcommittee on Bridges and Structures. Standard Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals. American Association of State Highway and Transportation Officials.