| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Happiness Yes or No?: The 7 Timeless Principles That You Need to Know to Achieve Success in Work and in Life | 978-1-5232-9773-3 (1-5232-9773-5) | 2015 |
H. Reynolds · Hassa Romuald · Haug Reinhold · Heike Reinhold · HUCH RONALD