Cita APA (7th ed.)
(1967). Labor Laws and their administration. U.S. Department of Labor.
Cita Chicago (17th ed.)
Labor Laws and Their Administration. Washington: U.S. Department of Labor, 1967.
Cita MLA (9th ed.)
Labor Laws and Their Administration. U.S. Department of Labor, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.