United States. Bureau of Standards. (1921). Weights and measures; 14th annual conference of representatives from various States, held at Bureau of Standards, Washington, D.C., May 23, 24, 25, and 26, 1921. GPO.
Chicago Style (17th ed.) CitationUnited States. Bureau of Standards. Weights and Measures; 14th Annual Conference of Representatives from Various States, Held at Bureau of Standards, Washington, D.C., May 23, 24, 25, and 26, 1921. [Washington]: GPO, 1921.
MLA (9th ed.) CitationUnited States. Bureau of Standards. Weights and Measures; 14th Annual Conference of Representatives from Various States, Held at Bureau of Standards, Washington, D.C., May 23, 24, 25, and 26, 1921. GPO, 1921.
Warning: These citations may not always be 100% accurate.