| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Communicating in Groups and Teams: Sharing Leadership | 978-0-495-57046-2 (0-495-57046-X) | 2009 | Gay Lumsden ยท Carolyn Wiethoff |
| Communicating with Credibility and Confidence, 3rd Edition | 978-0-495-00385-4 (0-495-00385-9) | 2005 | Gay Lumsden |