APA (7th ed.) Citation

American Association of State Highway Officials. (1951). Specifications for highway guards. [publisher not identified].

Chicago Style (17th ed.) Citation

American Association of State Highway Officials. Specifications for Highway Guards. Washington: [publisher not identified], 1951.

MLA (9th ed.) Citation

American Association of State Highway Officials. Specifications for Highway Guards. [publisher not identified], 1951.

Warning: These citations may not always be 100% accurate.