c't · D.C. · Dale Carnegie
| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| Leadership Mastery: How to Challenge Yourself and Others to Greatness | 978-1-4165-9549-6 (1-4165-9549-X) | 2009 |
| The 5 Essential People Skills: How to Assert Yourself, Listen to Others, and Resolve Conflicts | 978-1-4165-9548-9 (1-4165-9548-1) | 2009 |