| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Mastering Your Focus: How To Use Simple and Effective Strategies to Improve Concentration, Learn Faster, Ignore Distractions, Master Anything With ... Time Management Techniques) | 978-1-9811-5O17-5 (1-9811-5O17-X) | 2017 |