| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Principles of Economics | 978-0-07-731855-0 | 2010 | |
| PRINCIPLES OF ECONOMICS-STD.GD | 978-0-07-336271-7 | 2009 | |
| Principles of Macroeconomics | 978-0-07-321007-0 | 2006 | |
| Study Guide to accompany Principles of Economics | 978-0-07-321006-3 | 2005 | Louis Johnston |