Parker, W. E. 1. (1951). Human relations in supervision: Leadership in management. McGraw-Hill.
Citace podle Chicago (17th ed.)Parker, Willard Eagleson 1900. Human Relations in Supervision: Leadership in Management. New York: McGraw-Hill, 1951.
Citace podle MLA (9th ed.)Parker, Willard Eagleson 1900. Human Relations in Supervision: Leadership in Management. McGraw-Hill, 1951.
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