| Winning | Welch, Jack | Harper Collins Publishers Ltd. |
| Winning | Welch, Jack | Harper Collins Publishers Ltd. |
| Winning - The Answers | Welch, Jack | Harper Collins Publishers Ltd. |
| Winning | Welch, Jack | Harpercollins |
| Winning | Welch, Jack | Harper Collins Publishers Ltd. Audio |
| Winning | Welch, Jack | Harper Collins USA |
| Winning | Welch, Jack | Harper Collins Publishers Ltd. |
| Winning - 1 bis 3. 9 CDs | Welch, Jack | |
| Winning 2 - Mein Know-how für Ihre Karriere. 3 | Welch, Jack | |
| Winning | Welch, Jack | |
| Jack | Welch, Jack |
