Cita APA (7th ed.)
American Association of State Highway and Transportation Officials. (2002). Standard specifications for transportation materials and methods of sampling and testing (22nd ed.). American Association of State Highway and Transportation Officials.
Cita Chicago (17th ed.)
American Association of State Highway and Transportation Officials. Standard Specifications for Transportation Materials and Methods of Sampling and Testing. 22nd ed. Washington: American Association of State Highway and Transportation Officials, 2002.
Cita MLA (9th ed.)
American Association of State Highway and Transportation Officials. Standard Specifications for Transportation Materials and Methods of Sampling and Testing. 22nd ed. American Association of State Highway and Transportation Officials, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.