APA-referens (7:e uppl.)
International Energy Agency. (2014). Coal information: 2014 with 2013 data. International Energy Agency.
Chicago-referens (17:e uppl.)
International Energy Agency. Coal Information: 2014 with 2013 Data. Paris, France: International Energy Agency, 2014.
MLA-referens (9:e uppl.)
International Energy Agency. Coal Information: 2014 with 2013 Data. International Energy Agency, 2014.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.