World Health Organization (2004) Guidelines for Drinking Water Quality: Health Criteria and Other Support Information. 2, 18-97.
 United Nations (2008) The Millennium Development Goals Report.
 WHO/UNICEF (2000) Global Water Supply and Sanitation Assessment 2000 Report. United Nations Children’s Fund, and Water Supply and Sanitation Collaborative Council.
 World Health Organization (1997) Guidelines for Drinking-Water Quality: Surveillance and Control of Community Supplies. 3, 4-16, 96-219.
 Kingston, P.A. (2004) Surveillance of Drinking Water Quality in the Pacific Islands: Situation Analysis and Needs Assessment Country Reports. World Health Organization. (Accessed 19 June 2009).
 Samuel, M. (2011) Cameroon: How Affordable Is Potable Water for Communities? The Recorder News Online, Buea, Cameroon.
 WHO (World Health Organization) (2006) Guidelines for Drinking Water Quality: Incorporating First Addendum. 3rd Edition, WHO Press, Geneva.
 Nguedio-Yongsi, H.G. (2011) Microbiological Evaluation of Drinking Water in a Sub-Saharan Urban Community (Yaoundé). American journal of Biochemistry and Molecular Biology, 1, 68-81.