Não informado. (1939). Advanced management. Society for the Advancement of Management.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Advanced Management. New York: Society for the Advancement of Management, 1939.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Advanced Management. Society for the Advancement of Management, 1939.
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