| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Animal Signals | 978-0-19-852685-8 (0-19-852685-7) | 2003 | David Harper |
| The Origins of Life: From the Birth of Life to the Origin of Language | 978-0-19-286209-9 (0-19-286209-X) | 2000 | Professor Eors Szathmary |