(2013). Coal information 2013: With 2012 data. OECD : International Energy Agency.
芝加哥风格引文Coal Information 2013: With 2012 Data. Paris, France: OECD : International Energy Agency, 2013.
MLA引文Coal Information 2013: With 2012 Data. OECD : International Energy Agency, 2013.
警告：这些引文格式不一定是100％准确.