Lucas, R. W. (2005). Customer service: Building successful skills for the twenty-first century (3rd ed.). Boston: McGraw-Hill/Irwin.
Styl ChicagoLucas, Robert W. Customer Service: Building Successful Skills for the Twenty-first Century. 3rd ed. Boston: McGraw-Hill/Irwin, 2005.
Citace podle MLALucas, Robert W. Customer Service: Building Successful Skills for the Twenty-first Century. 3rd ed. Boston: McGraw-Hill/Irwin, 2005.
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