Williams, T. (2010). Positioning for professionals: How professional knowledge firms can differentiate their way to success. Wiley.
Citace podle Chicago (17th ed.)Williams, Tim. Positioning for Professionals: How Professional Knowledge Firms Can Differentiate Their Way to Success. Hoboken, N.J.: Wiley, 2010.
Citace podle MLA (9th ed.)Williams, Tim. Positioning for Professionals: How Professional Knowledge Firms Can Differentiate Their Way to Success. Wiley, 2010.
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