Lucas, R. W. (2005). Customer service: Building successful skills for the twenty-first century (3rd ed.). Boston: McGraw-Hill.
Styl cytowania ChicagoLucas, Robert W. Customer Service: Building Successful Skills for the Twenty-first Century. 3rd ed. Boston: McGraw-Hill, 2005.
Styl cytowania MLALucas, Robert W. Customer Service: Building Successful Skills for the Twenty-first Century. 3rd ed. Boston: McGraw-Hill, 2005.
Uwaga: Te cytaty mogą odróżniać się od wytycznej twojego fakultetu..