United States. Department of Commerce. Office of the Secretary, Harding, W. G., & Hoover, H. (1924). First National Conference on Street and Highway Safety. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Department of Commerce. Office of the Secretary, Warren G. Harding, and Herbert Hoover. First National Conference on Street and Highway Safety. Washington, D.C.: [publisher not identified], 1924.
MLA (9th ed.) CitationUnited States. Department of Commerce. Office of the Secretary, et al. First National Conference on Street and Highway Safety. [publisher not identified], 1924.
Warning: These citations may not always be 100% accurate.