1. Sheehan IIL and Lynch P Pathology of Toxaemia of pregnancy, Churchull Livingstone, London 1973.
2. Chessley, L.C, Hypertensive disorder in pregnancy, Appleton-Century-Croft, New York, 1978.
3. Banner, J, Me Nicol, G.P and Dougla, A.S. Brit Med, J.2:12, 1971.
4. Dunlop W Hill Lm, London MJ Oxley and Junes P. Lancet, 2, 316, 1978.
5. Loudon I. Some historical aspects of toxaemia of pregnancy. A review. Br J Obstet Gynaecol 1991; 98-853-858.