(2007). Energy: Yearly statistics .. Off. for Official Publ. of the Europ. Communities.
Chicago-Zitierstil (17. Ausg.)Energy: Yearly Statistics .. Luxembourg: Off. for Official Publ. of the Europ. Communities, 2007.
MLA-Zitierstil (8. Ausg.)Energy: Yearly Statistics .. Off. for Official Publ. of the Europ. Communities, 2007.
警告：這些引文格式不一定是100％准確.