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Citácia podle Chicago (17th ed.)European Commission, Energy (Brussels, Belgium). EU Energy in Figures: Statistical Pocketbook 2013. Luxembourg: Publications Office of the European Union, 2013.
Citácia podľa MLA (8th ed.)European Commission, Energy (Brussels, Belgium). EU Energy in Figures: Statistical Pocketbook 2013. Publications Office of the European Union, 2013.
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