| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Georges et les secrets de l'univers | 978-2-266-17645-3 (2-266-17645-5) | 2007 | Lucy Hawking · Stephen Hawking |
| George's Secret Key To The Universe | 978-0-385-61270-8 (0-385-61270-2) | 2007 | Lucy Hawking · Stephen W. Hawking |
| George's Secret Key to the Universe | 978-1-4169-5462-0 (1-4169-5462-7) | 2007 | Stephen Hawking · Lucy Hawking |