American Association of State Highway Officials. Committee on Planning and Design Policies. (1958). A policy on safety rest areas for the national system of interstate and defense highways.: Adopted April 30, 1958. [publisher not identified].
Chicago Style (17th ed.) CitationAmerican Association of State Highway Officials. Committee on Planning and Design Policies. A Policy on Safety Rest Areas for the National System of Interstate and Defense Highways.: Adopted April 30, 1958. Washington: [publisher not identified], 1958.
MLA (9th ed.) CitationAmerican Association of State Highway Officials. Committee on Planning and Design Policies. A Policy on Safety Rest Areas for the National System of Interstate and Defense Highways.: Adopted April 30, 1958. [publisher not identified], 1958.