1. Afari, E. A., Koram, K. A., Dunyo, S. K., & Nkrumah, F. K. (1996). The Epidemiology of Malaria with special emphasis on transmission, morbidity, mortality and disease control in Ghana. University of Ghana, Legon: Noguchi Memorial Institute for Medical Research (Unpublished research report).
2. Chloroquine phosphate suppositories in the treatment of childhood malaria in Calabar;Anit-Obong;Nigerian Current Therapeutic Research,1995
3. Black, R. H., Canfield, C. J., Clyde, D. F., Peters, W., & Wernsdorf, W. H. (1981). In Bruce-Chwatt (Ed.), Chemotherapy of malaria (2nd ed.). Geneva: World Health Organization.
4. Improving the quality of randomized controlled trials. The CONSORT Statement;Bregg;Journal of the American Medical Association, Aug 28,1996
5. Experimental and quasi-experimental designs for research;Campbell,1963