Timm, P. R. (1998). Customer service: Career succes through customer satisfaction. Prentice Hall.
Citazione stile Chigago Style (17a edizione)Timm, Paul R. Customer Service: Career Succes Through Customer Satisfaction. Upper Saddle River: Prentice Hall, 1998.
Citatione MLA (9a ed.)Timm, Paul R. Customer Service: Career Succes Through Customer Satisfaction. Prentice Hall, 1998.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.