United Nations Human Settlements Programme. (2010). Annual report 2009: Water and sanitation trust fund for a better urban future. Roots Advertising Services.
Cita Chicago (17th ed.)United Nations Human Settlements Programme. Annual Report 2009: Water and Sanitation Trust Fund for a Better Urban Future. India: Roots Advertising Services, 2010.
Cita MLA (9th ed.)United Nations Human Settlements Programme. Annual Report 2009: Water and Sanitation Trust Fund for a Better Urban Future. Roots Advertising Services, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.