Balachandran, V. (1975) - Maternal mortality in Kaduna, Nig. Med. J. 5(4) p.336.
2.
Davidson, N. Mc et al (1974) — Peripartum cardiac failure. An explanation for observed geographical distribution in Nigeria. Bull. W.H.O. 51 (2) 203.
3.
Davidson, N. Mc and Parry, E.H.O. (1975) — Proceedings: postpartum hypertension and aetiology of postpartum cardiac failure. Br. Heart J. 37 (7) 784.
4.
Davies, H.R.J. (1970) - In Zaria and its Region, 14th Annual Conference of the Nigerian Geographical Association, Zaria, January 1970, Ed. M. J. Mortimore.
5.
Harrison, K.A. (1978) - Childbearing in Zaria — being the text of a Public Lecture delivered at Ahmadu Bello University, Zaria, March 20, 1978.
6.
Lawson, J.B. and Stewart, D.B. (1967) — Obstetrics and Gynaecology in the Tropics and Developing Countries, Edward Arnold, London, p.10.
7.
Leavell, H.R. and Clark, E.G. (1958) — Preventive Medicine for the Doctor and His Community. McGraw-Hill, New York pp.345-393.
Osuhor. P.C. and Humponu-Wusu , O.O. (1978) — Maternal mortality in Malumfashi — Northern Nigeria. Journal of Pharmaceutical and Medical Sciences, 2(1) pp.35-39.