1. Israel, L., Kozarevic, B. and Sartorius, N. (1984) A Source Book of Geriatric Assessment, WHO/S, Karger, Basle.
2. Pattie, A. and Gilleard, C. (1979) Manual of the Clifton Assessment Procedure for the Elderly (CAPE), Hodder & Stoughton Educational, Sevenoaks.
3. Kenn, C., Wood, H., Kucyj, M. et al. (1987) Validation of the Hospital Anxiety and Depression Rating Scale (HADS) in an elderly psychiatric population. International Journal of Geriatric Psychiatry, 2, 189–93.
4. Yesavage, J., Brink, T., Rose, T. et al. (1983) Development and validation of a geriatric depression screening scale: a preliminary report. Journal of Psychiatric Research, 17, 37–49.
5. Adshead, F., Day Cody, D. and Pitt, B. (1992) BASDEC: a novel screening instrument for depression in elderly medical inpatients. British Medical Journal, 305, 397.