(2015). Natural gas information 2015: With 2014 data. OECD : IEA.
芝加哥风格引文Natural Gas Information 2015: With 2014 Data. Paris, France: OECD : IEA, 2015.
MLA引文Natural Gas Information 2015: With 2014 Data. OECD : IEA, 2015.
警告：这些引文格式不一定是100％准确.
APA引文