| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| 212: The Extra Degree | 978-1-885228-67-3 (1-885228-67-8) | 2011 | |
| 212 The Extra Degree: Extraordinary Results Begin with One Small Change | 978-1-4926-7543-3 (1-4926-7543-1) | 2018 | Mac Anderson |
| 212 The Extra Degree: Extraordinary Results Begin with One Small Change | 978-1-60810-640-0 (1-60810-640-3) | 2016 | " |