Merkoša sitáhtat

APA-čujuhus (7. p.)
International Energy Agency. (2012). Coal information: 2012 with 2011 data. OECD/IEA.
Chicago-čujuhus (17. p.)
International Energy Agency. Coal Information: 2012 with 2011 Data. France: OECD/IEA, 2012.
MLA-čujuhus (9. p.)
International Energy Agency. Coal Information: 2012 with 2011 Data. OECD/IEA, 2012.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.