| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Variable Analysis: A Problem Solving Method to Help You Stop Guessing and Solve the Hardest Problems | 978-0-9996945-3-4 (0-9996945-3-7) | 2019 | Nat Greene |
| Variable Analysis Workbook | 978-0-9996945-1-0 (0-9996945-1-0) | 2018 | " |