Rowman & Littlefield Publishers · UNIKUM
| title | ISBN-13 (ISBN-10) | year of publication | |
|---|---|---|---|
| Beitrag zur Kenntnis der Ipoh-Pfeilgifte | 978-3-8457-0180-6 (3-8457-0180-3) | 2013 | |
| Better Business Speech: Techniques and Shortcuts for Public Speaking at Work | 978-1-5381-0205-3 (1-5381-0205-6) | 2017 |