United States. Department of the Treasury. Office of the Secretary. (1920). Second supplement to Government salary tables showing 97<1/2> per cent of basic salaries in accordance with provisions of Civil-Service Retirement Act approved May 22, 1920. U.S. Government Printing Office.
Chicago Style (17th ed.) CitationUnited States. Department of the Treasury. Office of the Secretary. Second Supplement to Government Salary Tables Showing 97<1/2> Per Cent of Basic Salaries in Accordance with Provisions of Civil-Service Retirement Act Approved May 22, 1920. [Washington, D.C.]: U.S. Government Printing Office, 1920.
MLA (9th ed.) CitationUnited States. Department of the Treasury. Office of the Secretary. Second Supplement to Government Salary Tables Showing 97<1/2> Per Cent of Basic Salaries in Accordance with Provisions of Civil-Service Retirement Act Approved May 22, 1920. U.S. Government Printing Office, 1920.