| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Active Listening: Improve Your Ability to Listen and Lead | 978-1-882197-94-1 (1-882197-94-1) | 2007 | Center for Creative Leadership (CCL) |
| Communicating Across Cultures | 978-1-882197-59-0 (1-882197-59-3) | 2007 | Center for Creative Leadership (CCL) · Don W. Prince |
H.H. · H. Hoppe · M. H. · Michael H. · Michael Hoppe