Não informado. (1961). Industrial Relations. University of California, Institute of Industrial Relations.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Industrial Relations. Berkeley, Calif: University of California, Institute of Industrial Relations, 1961.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Industrial Relations. University of California, Institute of Industrial Relations, 1961.
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