Lucas, R. W. (2015). Customer service: Skills for success (sixth edition, international edition.). McGraw-Hill Education.
Chicago-Zitierstil (17. Ausg.)Lucas, Robert W. Customer Service: Skills for Success. sixth edition, international edition. New York, NY: McGraw-Hill Education, 2015.
MLA-Zitierstil (9. Ausg.)Lucas, Robert W. Customer Service: Skills for Success. sixth edition, international edition. McGraw-Hill Education, 2015.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.