Specifications for the design and construction of structural supports for highway signs.

APA Citation

American Association of State Highway Officials. (1968). Specifications for the design and construction of structural supports for highway signs. [Rev. ed.] Washington, D.C..

MLA Citation

American Association of State Highway Officials. Specifications for the Design And Construction of Structural Supports for Highway Signs. [Rev. ed.] Washington, D.C., 1968.

Warning: These citations may not always be complete (especially for serials).