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.
Cytowanie według stylu Chicago (wyd. 17)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.
Cytowanie według stylu MLA (wyd. 9)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.
Uwaga: Te cytaty mogą odróżniać się od wytycznej twojego fakultetu..