Crown Publishers · Simon & Schuster
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| 30 Days to a More Powerful Vocabulary | 978-0-671-74349-9 (0-671-74349-X) | 1991 | Norman Lewis |
| Six Weeks to Words of Power | 978-0-671-73283-7 (0-671-73283-8) | 1990 | |
| Word Origins: An Exploration and History of Words and Language | 978-0-517-26574-1 (0-517-26574-5) | 1992 | |