United States. Department of the Treasury. Office of the Secretary. (1919). Duties of laborers and messengers. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of the Treasury. Office of the Secretary. Duties of Laborers and Messengers. [Washington]: GPO, 1919.
MLA (9th ed.) CitationUnited States. Department of the Treasury. Office of the Secretary. Duties of Laborers and Messengers. GPO, 1919.
Warning: These citations may not always be 100% accurate.