| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Punctuation and Language Usage Made Easy: Concise Grammar Guidelines for Busy Professionals | 978-0-9722250-0-7 (0-9722250-0-5) | 2016 | Steven Wells |
| Punctuation and Language Usage Made Easy: Concise Grammar Guidelines for the Concise Professional | 978-0-9722250-8-3 (0-9722250-8-0) | 2019 | " |