Organisation for Economic Co-operation and Development & International Energy Agency. (1999). Energy policies of IEA countries. OCED.
Chicago-referens (17:e uppl.)Organisation for Economic Co-operation and Development och International Energy Agency. Energy Policies of IEA Countries. Paris: OCED, 1999.
MLA-referens (8:e uppl.)Organisation for Economic Co-operation and Development och International Energy Agency. Energy Policies of IEA Countries. OCED, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.