United States Civil Service Commission. (1920). Number of employees in Federal executive civil service on June 30, 1916, and on July 31, 1920. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States Civil Service Commission. Number of Employees in Federal Executive Civil Service on June 30, 1916, and on July 31, 1920. [Washington]: [publisher not identified], 1920.
MLA (9th ed.) CitationUnited States Civil Service Commission. Number of Employees in Federal Executive Civil Service on June 30, 1916, and on July 31, 1920. [publisher not identified], 1920.
Warning: These citations may not always be 100% accurate.