| Reference | Français | English |
| ISBN-10 | 2884749829 | 1684031346 |
| ISBN-13 | 978-2884749824 | 978-9386850560 |
| Book weight | 440 gr / 222 pages | 190 g / 212 pages |
To order the book on Amazon in French or English or in all the good bookstores. You can also order from the Heartfulness Foundation
belgium@heartfulness.org (+32) 02 315 33 53
