Timm, P. R. (2008). Customer service: Career success through customer loyalty. Pearson.
Čikaški stil citiranja (17. izdanje)Timm, Paul R. Customer Service: Career Success Through Customer Loyalty. Delhi: Pearson, 2008.
MLA način citiranja (9. izdanje)Timm, Paul R. Customer Service: Career Success Through Customer Loyalty. Pearson, 2008.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.