Johnson, E. M. (1939). The administration of minimum wage laws in the United States. International Labour Organization.
Citazione stile Chigago Style (17a edizione)Johnson, Ethel M. The Administration of Minimum Wage Laws in the United States. International Labour Organization, 1939.
Citatione MLA (9a ed.)Johnson, Ethel M. The Administration of Minimum Wage Laws in the United States. International Labour Organization, 1939.
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