1. UNESCO (2009) World water assessment programme. The United Nations world water development report 3: water in a changing world. EarthScan, London
2. PEP (2006) Linking poverty reduction and water management. Poverty-Environment Partnership and World Health Organization, Ginebra
3. Maslow A (1987) Motivation and personality, Brandeis University, Late
4. Unceta K (2007) La cooperación al desarrollo en las universidades españolas/Development cooperation in the Spanish universities. Spanish Agency for International Cooperation, Madrid
5. SPAIN (2009) Plan Director de Cooperación para el Desarrollo 2009–2010/Development Cooperation Director Plan 2009–2010, Madrid