Profile Books · Profile Books Ltd
| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| Any Question Answered | 978-1-84668-082-3 (1-84668-082-4) | 2007 |
| Brilliant Answers | 978-1-84668-216-2 (1-84668-216-9) | 2008 |
| The End of the Question Mark | 978-1-86197-869-1 (1-86197-869-3) | 2006 |