Não informado. (2002). Energy Sustainable Development. International Energy Initiative.
Chicago-referens (17:e uppl.)Não informado. Energy Sustainable Development. Bangalore, India: International Energy Initiative, 2002.
MLA-referens (8:e uppl.)Não informado. Energy Sustainable Development. International Energy Initiative, 2002.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.