Vassilakos, N. P. (1998). Energy-efficient industrial natural gas technologies and equipment. Office for Official Publications of the European Communities.
芝加哥风格引文Vassilakos, Nicholas P. Energy-efficient Industrial Natural Gas Technologies and Equipment. Luxembourg: Office for Official Publications of the European Communities, 1998.
MLA引文Vassilakos, Nicholas P. Energy-efficient Industrial Natural Gas Technologies and Equipment. Office for Official Publications of the European Communities, 1998.
警告：这些引文格式不一定是100％准确.