Não informado. (1939). Supervision: The magazine of industrial relations and operating management. National Association of Foremen.
Cita Chicago Style (17a ed.)Não informado. Supervision: The Magazine of Industrial Relations and Operating Management. Burlington, Vt: National Association of Foremen, 1939.
Cita MLA (8a ed.)Não informado. Supervision: The Magazine of Industrial Relations and Operating Management. National Association of Foremen, 1939.
Precaución: Estas citas no son 100% exactas.