1. Tema W. Introducing water education through non-formal channels. In Water Education in African Cities. Report of an Expert Group Meeting, Johannesburg: 2001.
2. Removing obstacles to healthy development. Report on infectious diseases;WHO,1999
3. Waterborne zoonoses: identification, causes and control;WHO,2006
4. The survival and recovery of Pseudomonas aeruginosa, and its effect upon Salmonellae in water: methodology to test bottled water in Canada;Warburton;Can J Microbiol,2002
5. WHO/UNICEF. Global Water Supply and Sanitation Assessment 2000; Report World Health Organization, Geneva.