Lucas, R. W. (2005). Customer service: Building Successful Skills for the Twenty-First Century. New York: McGraw - Hill.
Chicago Stili AlıntıLucas, Robert W. Customer Service: Building Successful Skills for the Twenty-First Century. New York: McGraw - Hill, 2005.
MLA AlıntıLucas, Robert W. Customer Service: Building Successful Skills for the Twenty-First Century. New York: McGraw - Hill, 2005.
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