1. AAWSSA (2008) Water production and distribution in Addis Ababa. Addis Ababa Water Supply and Sewerage Authority, Addis Ababa
2. Adebaw C (2008) Personal communication with Mr. Adebaw from Bureau of Agriculture on urban agriculture. 23 July 2008 Addis Ababa
3. AfDB (2005) Accra Sewerage Improvement Project Appraisal Report Accra, African Development Bank
4. Asfaw F (2007) Modelling on Akaki rivers liquid waste disposal and base flow separation department of environmental science. Addis Ababa University Faculty of Science. MSc, Addis Ababa
5. AVRL (2006) Accra water supply figures received from Aqua Vitens Rand Ltd in October 2006 unpublished data