American Association of State Highway and Transportation Officials & Knovel (Firm). (2016). Standard specifications for transportation materials and methods of sampling and testing and AASHTO provisional standards (2016 edition.). American Association of State Highway and Transportation Officials.
Chicago Style (17th ed.) CitationAmerican Association of State Highway and Transportation Officials and Knovel (Firm). Standard Specifications for Transportation Materials and Methods of Sampling and Testing and AASHTO Provisional Standards. 2016 edition. Washington, DC: American Association of State Highway and Transportation Officials, 2016.
MLA (9th ed.) CitationAmerican Association of State Highway and Transportation Officials and Knovel (Firm). Standard Specifications for Transportation Materials and Methods of Sampling and Testing and AASHTO Provisional Standards. 2016 edition. American Association of State Highway and Transportation Officials, 2016.