Marshall, D. R. (1999). The four elements of successful management: Select, direct, evaluate, reward. AMACOM.
Citace podle Chicago (17th ed.)Marshall, Don R. The Four Elements of Successful Management: Select, Direct, Evaluate, Reward. New York, N.Y: AMACOM, 1999.
Citace podle MLA (9th ed.)Marshall, Don R. The Four Elements of Successful Management: Select, Direct, Evaluate, Reward. AMACOM, 1999.
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