This manual represents a complete and up-to-date overview of assessing water footprints. It shows how water footprints are calculated for individual processes and products as well as for consumers and nations.
HOEKSTRA, A. Y. CHAPAGAIN, A. K. ALDAYA, M. M. MEKONNEN, M. M. (2009): Water Footprint Manual. Enschede: Water Footprint Network URL [Accessed: 12.10.2010]