Gaya APA

V. Kumar, ., Werner Reinartz, . (2018). Customer Relationship Management Concept, Strategy, and Tools (Third Edition). Germany: Springer-Verlag GmbH.

Gaya MLA

V. Kumar, ., Werner Reinartz, . "Customer Relationship Management Concept, Strategy, and Tools". Third Edition Germany: Springer-Verlag GmbH, 2018. eBook.