Cambridge University Press · Nabu Press
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Our Forefathers: The Gothonic Nations | 978-1-107-67478-3 (1-107-67478-6) | 2013 |
| Our Forefathers: The Gothonic Nations | 978-1-107-67723-4 (1-107-67723-8) | 2013 |
| Ptolemy's Maps of Northern Europe, a Reconstruction of the Prototypes - Primary Source Edition | 978-1-294-46054-1 (1-294-46054-4) | 2014 |