| Original Language | English |
| First published | 2001 |
Editions 2
Add Edition| Title | Publisher | Format | Language | Location | Dates | Impression | |
|---|---|---|---|---|---|---|---|
 | Denkt | Haffmans Verlag | Hardback | German | Zürich | 2001 | |
 | Thinks ... | Penguin Group | Paperback | English | London, UK | 2002 | 1 |
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