| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2013 | 978-1-929274-33-8 | David Harrington · Charles LeBeau | Performance: Conversation Scenes from Everyday Life |
| 1999 | 978-1-929274-42-0 | Michael Lubetsky · Charles Lebeau · David Harrington | Discover Debate |
| 2000 | 978-1-929274-43-7 | LeBeau · Harrington | Discover Debate (Audio CD) |
| 978-1-929274-45-1 | Getting Ready for Speech Student Book | ||
| 2001 | 978-1-929274-49-9 | Charles LeBeau · David Harrington | Getting Ready for Speech |
| 2006 | 978-1-929274-77-2 | Charles LeBeau / David Harrington | Discussion Process and Principles |
| '' | 978-1-929274-79-6 | '' | Discussion Process & Principles (Audio CD) |