European Commission. Directorate-General for Energy and Transport. (2005). Implementing the internal energy market: Annual report 2004. Office for Official Publications of the European Communities.
Chicagoスタイル(17版)引用形式European Commission. Directorate-General for Energy and Transport. Implementing the Internal Energy Market: Annual Report 2004. Luxembourg: Office for Official Publications of the European Communities, 2005.
MLA(9版)引用形式European Commission. Directorate-General for Energy and Transport. Implementing the Internal Energy Market: Annual Report 2004. Office for Official Publications of the European Communities, 2005.
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