United States. Employment Standards Administration. Division of State Employment Standards & Mitchell, O. (1971). Federal labor laws and programs: A layman's guide (Rev.). For sale by the Supt. of Docs., U.S. Govt. Print. Off.
Cita Chicago (17th ed.)United States. Employment Standards Administration. Division of State Employment Standards i Ora Mitchell. Federal Labor Laws and Programs: A Layman's Guide. Rev. Washington: For sale by the Supt. of Docs., U.S. Govt. Print. Off, 1971.
Cita MLA (9th ed.)United States. Employment Standards Administration. Division of State Employment Standards i Ora Mitchell. Federal Labor Laws and Programs: A Layman's Guide. Rev. For sale by the Supt. of Docs., U.S. Govt. Print. Off, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.