American Association of State Highway and Transportation Officials. (2015). Standard Specifications for Transportation Materials and Methods of Sampling and Testing and AASHTO Provisional Standards: Part 2A: tests (35nd Edition.). Washintong D.C: AASHTO.
Chicago Style CitationAmerican Association of State Highway and Transportation Officials. Standard Specifications for Transportation Materials and Methods of Sampling and Testing and AASHTO Provisional Standards: Part 2A: Tests. 35nd Edition. Washintong D.C: AASHTO, 2015.
MLA CitationAmerican Association of State Highway and Transportation Officials. Standard Specifications for Transportation Materials and Methods of Sampling and Testing and AASHTO Provisional Standards: Part 2A: Tests. 35nd Edition. Washintong D.C: AASHTO, 2015.