| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2009 | 978-0-9811937-0-0 | Gail Christel Behrend · Claudette Anna Bouchard | Energy Is Real! -- A Practical Guide for Managing Personal Energy in Daily Life |
| 2019 | 978-0-9811937-1-7 | '' | Energy is Real!: A Practical Guide for Managing Personal Energy in Daily Life (2nd Edition) |