| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2018 | 978-0-9996945-1-0 | Stroud International · Nat Greene | Variable Analysis Workbook |
| 2019 | 978-0-9996945-3-4 | Nat Greene · Stroud International | Variable Analysis: A Problem Solving Method to Help You Stop Guessing and Solve the Hardest Problems |