Hodder & Stoughton · McGraw-Hill
| title | media type | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|---|
| Be a Number Genius: Flash | Paperback | 978-1-4441-5271-5 | 2012 | Jonathan Hancock |
| Be a Number Genius: Flash | CD-ROM | 978-1-4441-5273-9 | 2012 | " |
| Number-Training Your Brain: A Teach Yourself Guide | Paperback | 978-0-07-176959-4 | 2011 | " |
| Number Training Your Brain: Teach Yourself | " | 978-1-4441-2191-9 | 2011 | " |
| Number Training Your Brain: Teach Yourself | CD-ROM | 978-1-4441-3649-4 | 2011 | " |