| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Doing Business With Korea | 978-0-87573-043-1 (0-87573-043-4) | 1997 | Paul Leppert · Paul A. Leppert |
| Doing Business With Singapore | 978-0-87573-042-4 (0-87573-042-6) | 1997 | Paul Leppert · Paul A. Leppert |