Timm, P. R. (2008). Customer service: Career success through customer loyalty (4th ed.). Pearson.
Citazione stile Chigago Style (17a edizione)Timm, Paul R. Customer Service: Career Success Through Customer Loyalty. 4th ed. Upper Saddle, River, NJ: Pearson, 2008.
Citatione MLA (9a ed.)Timm, Paul R. Customer Service: Career Success Through Customer Loyalty. 4th ed. Pearson, 2008.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.