| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2019 | 978-1-7336227-0-7 | Greg Winteregg | FUN AT WORK: More Time, Freedom, Profit and More of What You Love To Do |
| '' | 978-1-7336227-2-1 | '' | Fun at Work: More Time, Freedom, Profit and More of What You Love To Do |