| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2000 | 978-0-9668070-4-2 | Kathy Sole | What's the Rule? A Simple Guide to Perfect Punctuation, Great Grammar, and Superb Sentences and Style |
| 1999 | 978-0-9668070-5-9 | Kathleen M. Sole | What's the Rule? Set of Three Guides |
| 2006 | 978-0-9668070-9-7 | kathy-sole | What's the Rule?: a Simple Guide to Perfect Punctuation, Great Grammar, and Superb Sentences and Sty |