| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Study Guide for use with Economics | 978-0-07-237225-0 (0-07-237225-7) | 2001 | Paul Samuelson · William Nordhaus · Kathryn Nantz |
| Study Guide to Accompany Macroeconomics | 978-0-07-057952-1 (0-07-057952-0) | 1999 | Paul A. Samuelson · Kathryn Nantz |
| Study Guide to Accompany Microeconomics | 978-0-07-057954-5 (0-07-057954-7) | 1998 | Paul A. Samuelson · William Nordhaus · Kathryn Nantz |