| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Principles of Economics | 978-0-7171-4988-9 (0-7171-4988-9) | 2011 | Gerard Turley · Francis O'Toole |
| Principles of Economics | 978-0-7171-4025-1 (0-7171-4025-3) | 2006 | Gerard Turley · Francis O'Toole |
| The Principles of Economics: An Irish Textbook | 978-0-7171-2509-8 (0-7171-2509-2) | 1997 | Gerard Turley |