| title | media type | ISBN-13 | year of publica- tion | other author(s) | |
|---|---|---|---|---|---|
| The Germanic Strong Verbs: Foundations and Development of a New System | Gebunden | 978-3-11-916113-8 | 2008 | ||
| The Germanic Strong Verbs: Foundations and Development of a New System | " | 978-3-11-019957-4 | 2007 | ||
| The Semitic Component of Early Germanic: Language and Culture | " | 978-1-61451-457-2 | 2018 | Theo Vennemann | |
| The Semitic Component of Early Germanic: Language and Culture | Hardcover | 978-1-61451-608-8 | 2017 | " | |