ROBERT W. Lucas, & John E. Biernat. (2005). Customer Service: Building succesful skils for the twenty-first century. New York: McGraw-Hill.
Chicago ZitierstilROBERT W. Lucas, and John E. Biernat. Customer Service: Building Succesful Skils for the Twenty-first Century. New York: McGraw-Hill, 2005.
MLA ZitierstilROBERT W. Lucas, and John E. Biernat. Customer Service: Building Succesful Skils for the Twenty-first Century. New York: McGraw-Hill, 2005.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.