United States. Department of Labor. Office of the Secretary. (1919). Proceedings of 5th annual convention of Association of Governmental Labor Officials of U.S. and Canada, Des Moines, Iowa, June 24-28, 1918. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of Labor. Office of the Secretary. Proceedings of 5th Annual Convention of Association of Governmental Labor Officials of U.S. and Canada, Des Moines, Iowa, June 24-28, 1918. [Washington]: GPO, 1919.
MLA (9th ed.) CitationUnited States. Department of Labor. Office of the Secretary. Proceedings of 5th Annual Convention of Association of Governmental Labor Officials of U.S. and Canada, Des Moines, Iowa, June 24-28, 1918. GPO, 1919.
Warning: These citations may not always be 100% accurate.