Reichheld, F. F., & Teal, T. (1996). The loyalty effect: The hidden force behind growth, profits, and lasting value. Harvard Business School Press.
Citace podle Chicago (17th ed.)Reichheld, Frederick F., a Thomas Teal. The Loyalty Effect: The Hidden Force Behind Growth, Profits, and Lasting Value. Boston, Mass: Harvard Business School Press, 1996.
Citace podle MLA (9th ed.)Reichheld, Frederick F., a Thomas Teal. The Loyalty Effect: The Hidden Force Behind Growth, Profits, and Lasting Value. Harvard Business School Press, 1996.
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