"Countries Compared by Environment > Ecological footprint. International Statistics at NationMaster.com", World Wide Fund for Nature (WWF), Living Planet Report 2000, Gland, Switzerland: 2000, and Redefining Progress. Aggregates compiled by NationMaster. Retrieved from http://www.nationmaster.com/country-info/group-stats/Eurozone/Environment/Ecological-footprint
"Countries Compared by Environment > Ecological footprint. International Statistics at NationMaster.com, World Wide Fund for Nature (WWF), Living Planet Report 2000, Gland, Switzerland: 2000, and Redefining Progress. Aggregates compiled by NationMaster." 2000-2012. <http://www.nationmaster.com/country-info/group-stats/Eurozone/Environment/Ecological-footprint>.
'Countries Compared by Environment > Ecological footprint. International Statistics at NationMaster.com, World Wide Fund for Nature (WWF), Living Planet Report 2000, Gland, Switzerland: 2000, and Redefining Progress. Aggregates compiled by NationMaster.', <http://www.nationmaster.com/country-info/group-stats/Eurozone/Environment/Ecological-footprint> [assessed 2000-2012]
"Countries Compared by Environment > Ecological footprint. International Statistics at NationMaster.com", World Wide Fund for Nature (WWF), Living Planet Report 2000, Gland, Switzerland: 2000, and Redefining Progress. Aggregates compiled by NationMaster. [Internet]. 2000-2012. Avaliable from: <http://www.nationmaster.com/country-info/group-stats/Eurozone/Environment/Ecological-footprint>.
"Countries Compared by Environment > Ecological footprint. International Statistics at NationMaster.com", World Wide Fund for Nature (WWF), Living Planet Report 2000, Gland, Switzerland: 2000, and Redefining Progress. Aggregates compiled by NationMaster. Avaliable at: nationmaster.com. Assessed 2000-2012.
"Countries Compared by Environment > Ecological footprint. International Statistics at NationMaster.com, World Wide Fund for Nature (WWF), Living Planet Report 2000, Gland, Switzerland: 2000, and Redefining Progress. Aggregates compiled by NationMaster.," http://www.nationmaster.com/country-info/group-stats/Eurozone/Environment/Ecological-footprint (assessed 2000-2012)
"Countries Compared by Environment > Ecological footprint. International Statistics at NationMaster.com", World Wide Fund for Nature (WWF), Living Planet Report 2000, Gland, Switzerland: 2000, and Redefining Progress. Aggregates compiled by NationMaster., http://www.nationmaster.com/country-info/group-stats/Eurozone/Environment/Ecological-footprint (last visited 2000-2012)
"Countries Compared by Environment > Ecological footprint. International Statistics at NationMaster.com", World Wide Fund for Nature (WWF), Living Planet Report 2000, Gland, Switzerland: 2000, and Redefining Progress. Aggregates compiled by NationMaster., http://www.nationmaster.com/country-info/group-stats/Eurozone/Environment/Ecological-footprint (as of 2000-2012)
