United States. Bureau of Standards. (1919). Weights and measures; 12th annual conference of representatives from various States, held at Bureau of Standards, Washington, D.C., May 21, 22, 23, and 24, 1919. GPO.
Chicago Style (17th ed.) CitationUnited States. Bureau of Standards. Weights and Measures; 12th Annual Conference of Representatives from Various States, Held at Bureau of Standards, Washington, D.C., May 21, 22, 23, and 24, 1919. [Washington]: GPO, 1919.
MLA (9th ed.) CitationUnited States. Bureau of Standards. Weights and Measures; 12th Annual Conference of Representatives from Various States, Held at Bureau of Standards, Washington, D.C., May 21, 22, 23, and 24, 1919. GPO, 1919.
Warning: These citations may not always be 100% accurate.