Global Footprint Network (GFN) (2006), Compendium of Environmental Sustainability Indicator Collections: 2006 National Footprint Accounts, Global Footprint Network (GFN), Oakland, CA,
http://sedac.ciesin.columbia.edu/data/set/cesic-national-footprint-... Center for International Earth Science Information Network (CIESIN)/Columbia University (2006), Compendium of Environmental Sustainability Indicator Collections: Ancillary Data, NASA Socioeconomic Data and Applications Center (SEDAC), Palisades, NY,
http://sedac.ciesin.columbia.edu/data/set/cesic-ancillary-data Center for International Earth Science Information Network (CIESIN)/Columbia University (2007), Compendium of Environmental Sustainability Indicator Collections: Complete Collection,Version 1.1, NASA Socioeconomic Data and Applications Center (SEDAC), Palisades, NY,
http://sedac.ciesin.columbia.edu/data/set/cesic-complete-collection... Consultative Group on Sustainable Development Indicators (CGSDI) (2002), Compendium of Environmental Sustainability Indicator Collections: Rio to Johannesburg Dashboard of Sustainable Development Indicators,
http://sedac.ciesin.columbia.edu/data/set/cesic-rio-to-johannesburg... Prescott-Allen, R. (2001), Compendium of Environmental Sustainability Indicator Collections: The Wellbeing of Nations, Island Press, Washington, DC,
http://sedac.ciesin.columbia.edu/data/set/cesic-wellbeing-of-nations