| title | ISBN-13 | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| How to Create New Ideas | 978-0-13-404517-7 | 1982 | ||
| How to create new ideas: For corporate profit and personal success | 978-0-13-404509-2 | 1982 | ||
| How to Sell New Ideas | 978-0-13-432419-7 | 1981 | JOSEPH C. YEAGER | |
| How to Sell New Ideas: Your Company's and Your Own | 978-0-13-432427-2 | 1981 | ||
| Kreativitätsspiele | 978-3-453-53166-6 | 1991 | ||
| So steigern Sie ihre Kreativität | 978-3-453-53155-0 | 1990 | ||