| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Be fearless in the pursuit of what sets your soul on fire | 978-1-6703-3270-7 (1-6703-3270-5) | 2019 |
| Be Still | 978-1-7077-0495-8 (1-7077-0495-3) | 2019 |
K. R. · Klas Roth · Klaus Reith · Klaus Rheidt · Klaus Riede · Klaus Rith · Klaus Rohde · Klaus Roth · Klaus Rothe · Klaus Rutow