References

Bennett, V.R. and L.K. Brown, 1999. Myles Textbook for Midwives. 13th Edn., Harcourt Brace and Co., Churchill.

Calder, A.A. and W. Dunlop, 1993. High Risk Pregnancy. Butterworth-Heinemann Ltd., London.

Jones, D.C., 1992. Fundamentals of Obsterics and Gynaecology. 5th Edn., Wolfe Publication Co., Britain.

Ojo, O.A. and E.B. Briggs, 1992. Textbook for Midwives in the Tropics. 2nd Edn., Gibrine Publication Co., Ghana.

Quixley, I.M. and M.D. Cameron, 1979. Obsterics Gynaecology. Hodder and Stonghton Ltd., Toronto.

Rose, E., 2005. Pregnancy induced hypertension. http://pregnancy.about.com/od/hypertensionpre/a/pihinpg.htm.