O'Neil, S. L. (2001). Your attitude is showing: A primer of human relations (10th ed.). Prentice Hall.
Citace podle Chicago (17th ed.)O'Neil, Sharon Lund. Your Attitude Is Showing: A Primer of Human Relations. 10th ed. Upper Saddle River, N. J: Prentice Hall, 2001.
Citace podle MLA (9th ed.)O'Neil, Sharon Lund. Your Attitude Is Showing: A Primer of Human Relations. 10th ed. Prentice Hall, 2001.
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