| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Endless Prospects: 301 Tactics to Reach Hard-To-Reach People | 978-0-07-069630-3 (0-07-069630-6) | 1997 |
| Potega slowa dlaczego | 978-83-246-9235-4 (83-246-9235-5) | 2014 |
| Power of Why, The | 978-1-4915-1429-0 (1-4915-1429-9) | 2014 |
C.R. · C Richard · C. W. · C. Weylman · Richard W. · Weylman C Richard
Brilliance Audio · Helion · McGraw-Hill