CreateSpace Independent Publishing Platform · Independently published
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| ELEMENTS OF PLANE TRIGONOMETRY | 978-1-6708-4657-0 (1-6708-4657-1) | 2019 |
| Elements of Plane Trigonometry: Large Print | 978-1-7242-6919-5 (1-7242-6919-4) | 2018 |