American Association of State Highway Officials. Committee on Planning and Design Policies. (1961). An informational guide on services to motorists on interstate highways. AASHO.
Chicago Style (17th ed.) CitationAmerican Association of State Highway Officials. Committee on Planning and Design Policies. An Informational Guide on Services to Motorists on Interstate Highways. Washington, D.C.: AASHO, 1961.
MLA (9th ed.) CitationAmerican Association of State Highway Officials. Committee on Planning and Design Policies. An Informational Guide on Services to Motorists on Interstate Highways. AASHO, 1961.
Warning: These citations may not always be 100% accurate.