| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Fortytude: Making the Next Decades the Best Years of Your Life - Through 40s, 50s, and Beyond | Audio CD | 978-1-4272-6003-1 (1-4272-6003-6) | 2014 |
| Fortytude: Making the Next Decades the Best Years of Your Life -- through the 40s, 50s, and Beyond | Hardcover | 978-1-4013-4119-0 (1-4013-4119-5) | 2011 |
| Fortytude: Making the Next Decades the Best Years of Your Life -- through the 40s, 50s, and Beyond | Paperback | 978-1-4013-4182-4 (1-4013-4182-9) | 2011 |