| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Guinness World Records: Brain Stretching Quiz Pad | 978-0-8431-1385-3 | 2005 | Jon Richards · Ed Simkins · Sandra Perry |
| Guinness World Records: Brain Teasing Quiz Pad | 978-0-8431-1596-3 | 2005 | Jon Richards · Ed Simkins · Sandra Perry |
| Guinness World Records: Mind Bending Quiz Pad | 978-0-8431-1595-6 | 2005 | Jon Richards · Ed Simkins · Sandra Perry |
| Guinness World Records: Mind Boggling Quiz Pad | 978-0-8431-1389-1 | 2005 | Jon Richards · Ed Simkins · Sandra Perry |
Nicholas Fairweather · Nicolas Friederici · Nicolas Froidure · Niklas Forreiter · Niklaus Friederich