American Association of State Highway Officials. Committee on Materials. (1968). Interim specifications and methods adopted by the AASHO Committee on Materials, 1966-1967. American Association of State Highway Officials.
Chicago Style (17th ed.) CitationAmerican Association of State Highway Officials. Committee on Materials. Interim Specifications and Methods Adopted by the AASHO Committee on Materials, 1966-1967. Washington: American Association of State Highway Officials, 1968.
MLA (9th ed.) CitationAmerican Association of State Highway Officials. Committee on Materials. Interim Specifications and Methods Adopted by the AASHO Committee on Materials, 1966-1967. American Association of State Highway Officials, 1968.
Warning: These citations may not always be 100% accurate.