D S · Dr. S. · S. L. · Steve Lakin
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| How to Improve your Maths Skills | 978-0-273-77002-2 (0-273-77002-0) | 2011 |
| How to Improve your Maths Skills | 978-0-273-73283-9 (0-273-73283-8) | 2010 |
| How to Use Statistics | 978-0-273-74387-3 (0-273-74387-2) | 2011 |