| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2011 | 978-0-9870062-0-2 | Malik Jaffer · Bill Gee · Memory Matanda | Healing with Happiness: Overcoming Stress and Depression, Building Health and Emotional Intelligence with Applied Positive Psychology and Aerobic Laughter Therapy: The JOYGYM Happiness System |