Peelen, E. (2022). Customer relationship management. Pearson India Edu. Services.
Čikaški stil citiranja (17. izdanje)Peelen, Ed. Customer Relationship Management. Noida: Pearson India Edu. Services, 2022.
MLA način citiranja (9. izdanje)Peelen, Ed. Customer Relationship Management. Pearson India Edu. Services, 2022.
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