G. T. · Graham Tullis · S. Power G. Tullis · T. Trappe G. Tullis
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Insights into Business | 978-0-582-33553-0 (0-582-33553-1) | 2000 | Michael Lannon · etc. · T Trappe |
| New Insights Into Business Bec Workbook | 978-0-582-83800-0 (0-582-83800-2) | 2004 | |
| New Insights Into Business Toeic Workboo | 978-0-582-83803-1 (0-582-83803-7) | 2004 | |