(1921). Standard and tentative methods of sampling and testing highway materials; recommended by 2nd Conference of State Highway Testing Engineers and Chemists, Washington, D.C., Feb. 23-27, 1920. GPO.
Chicago Style (17th ed.) CitationStandard and Tentative Methods of Sampling and Testing Highway Materials; Recommended by 2nd Conference of State Highway Testing Engineers and Chemists, Washington, D.C., Feb. 23-27, 1920. [Washington]: GPO, 1921.
MLA (9th ed.) CitationStandard and Tentative Methods of Sampling and Testing Highway Materials; Recommended by 2nd Conference of State Highway Testing Engineers and Chemists, Washington, D.C., Feb. 23-27, 1920. GPO, 1921.
Warning: These citations may not always be 100% accurate.