Não informado. (1919). Personnel: The management of people at work. American Management Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Personnel: The Management of People at Work. New York: American Management Association, 1919.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Personnel: The Management of People at Work. American Management Association, 1919.
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