| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Study Guide to accompany Modern Principles: Microeconomics | 978-1-4292-3170-1 (1-4292-3170-X) | 2009 | |
| Test Item File 1 Principles of Macroeconomics 7th Edition | 978-0-13-144243-6 (0-13-144243-0) | 2004 | Karl E. Case · Ray C. Fair |