1. Dirt Alert;Hempshall;Nursing Times,1998
2. Hospital Hygiene, 3rd edition;Maurer,1985
3. The hospital environment: how clean should a hospital be?;Collins;Journal of Hospital Infection,1988
4. Sweeping Change;Gaze;Nursing Times,1990
5. Grime Watch;Hempshall;Nursing Times,1998