| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Instructor's Resource CD-ROM to Accompany Understanding Economics, a Contemporary Perspective, 4th Edition | 978-0-07-095837-1 (0-07-095837-8) | 2007 |
| Understanding Economics: A Contemporary Perspective | 978-0-07-095492-2 (0-07-095492-5) | 2007 |
| Understanding economics: A contemporary perspective | 978-0-07-552901-9 (0-07-552901-7) | 1998 |