WILLIAMS, F. (1983). Executive communication power: Basic skills for management success. Prentice-Hall.
Citace podle Chicago (17th ed.)WILLIAMS, Frederick. Executive Communication Power: Basic Skills for Management Success. Englewood Cliffs: Prentice-Hall, 1983.
Citace podle MLA (9th ed.)WILLIAMS, Frederick. Executive Communication Power: Basic Skills for Management Success. Prentice-Hall, 1983.
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