(1951). Civil service preference, retirement, and salary classification laws. U.S. Govt. Print. Off.
Cita Chicago (17th ed.)Civil Service Preference, Retirement, and Salary Classification Laws. Washington: U.S. Govt. Print. Off, 1951.
Cita MLA (9th ed.)Civil Service Preference, Retirement, and Salary Classification Laws. U.S. Govt. Print. Off, 1951.
Atenció: Aquestes cites poden no estar 100% correctes.