1. Energy Use in New Zealand Households. Report on the Year 10 Analysis for Household Energy End-Use Project;Isaacs,2006
2. Energy, Transport and Environmental Indicators;Eurostat - European Commission,2013
3. Organization for Economic Co-operation and Development (OECD). Members and partners. n.d.; http://www.oecd.org/about/membersandpartners/[accessed Apr 2019].
4. International Energy Outlook 2013;US Energy Information Administration,2013
5. Residential energy use: an international perspective on long-term trends in Denmark, Norway and Sweden;Unander;Energy Policy,2004