| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Linkage Inc's Best Practices in Leadership Development Handbook: Case Studies, Instruments, Training | Hardcover | 978-0-470-19567-3 (0-470-19567-3) | 2009 |
| Linkage Inc's Best Practices in Leadership Development Handbook: Case Studies, Instruments, Training | 978-0-470-45141-0 (0-470-45141-6) | ||
| Linkage Inc.'s Best Practices in Succession Planning | Hardcover | 978-0-7879-8579-0 (0-7879-8579-1) | 2007 |