1. The challenges of growth and development in Metropolitan Lagos;Abiodun,1997
2. Wasting the rain: Rivers, people and planning in Africa;Adams,1992
3. Africa South of the Sahara (1999). Africa South of the Sahara 2000 (29th ed.). London: Europa Publications
4. American Society of Civil Engineers. Task Committee on Sustainability Criteria (1998). Sustainability criteria for water resource systems. Reston, VA: American Society of Civil Engineers
5. Aquatsat (1997). Egypt. Available: http://www.fao.org/waicent/faoinfo/agricult/agl/aglw/aquastat/egypt.htm