| Measuring the effectiveness of drug law enforcement / Katie Willis, Jessica Anderson and Peter Homel. |
|
2011 |
| A framework for measuring the performance of drug law enforcement / Peter Homel and Katie Willis. |
|
2007 |
| Sport, physical activity and antisocial behaviour in youth [electronic resource] / Leesa Morris, Jo Sallybanks and Katie Willis. |
|
2003 |