| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Schopenhauer's World as Will and Idea, Volume 2 | 978-0-321-35580-5 (0-321-35580-6) | 2007 | Richard Aquila · Daniel Kolak |
| Schopenhauer's World as Will and Presentation, Volume I | 978-0-321-35578-2 (0-321-35578-4) | 2007 | Arthur Schopenhauer · Richard Aquila · Daniel Kolak |