International Energy Agency. (2012). Coal information: 2012 with 2011 data. OECD/IEA.
Chicago Style (17th ed.) CitationInternational Energy Agency. Coal Information: 2012 with 2011 Data. France: OECD/IEA, 2012.
MLA引文International Energy Agency. Coal Information: 2012 with 2011 Data. OECD/IEA, 2012.
警告:這些引文格式不一定是100%准確.