| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| Das E-CRM Praxisbuch: Was Sie über Customer Relationship Management im Internet wissen müssen: Was Sie Uber Customer Relationship Management Im Internet Wissen Mussen | 978-3-527-50023-9 (3-527-50023-5) | 2002 | Matthias Arndt | |
| New Economy Excellence Series, New Economy Emotion: Engaging Customer Passion with e-crm | 978-0-470-84135-8 (0-470-84135-4) | 2001 | " |