Ricketts, Dale; Carnell, Heidi; Davies, Steffan; Kaul, Adarsh; Duggan, Conor (2001). "First admissions to a regional secure unit over a 16-year period: changes in demographic and service characteristics". The Journal of Forensic Psychiatry. 12: 78–89. doi:10.1080/09585180121913. S2CID144212491.
Ricketts, Dale; Carnell, Heidi; Davies, Steffan; Kaul, Adarsh; Duggan, Conor (2001). "First admissions to a regional secure unit over a 16-year period: changes in demographic and service characteristics". The Journal of Forensic Psychiatry. 12: 78–89. doi:10.1080/09585180121913. S2CID144212491.