American Association of State Highway and Transportation Officials. Operating Subcommittee on Roadway Design. (1974). AASHO interim guide for design of pavement structures, 1972 ([2d ed.].). American Association of State Highway and Transportation Officials.
Chicago Style (17th ed.) CitationAmerican Association of State Highway and Transportation Officials. Operating Subcommittee on Roadway Design. AASHO Interim Guide for Design of Pavement Structures, 1972. [2d ed.]. Washington: American Association of State Highway and Transportation Officials, 1974.
MLA (9th ed.) CitationAmerican Association of State Highway and Transportation Officials. Operating Subcommittee on Roadway Design. AASHO Interim Guide for Design of Pavement Structures, 1972. [2d ed.]. American Association of State Highway and Transportation Officials, 1974.