International Energy Agency, IEA (Paris, France). (2019). World energy statistics 2019. Organisation for Economic Co-operation and Development. https://doi.org/10.1787/2e828dea-en
Citácia podle Chicago (17th ed.)International Energy Agency, IEA (Paris, France). World Energy Statistics 2019. Paris: Organisation for Economic Co-operation and Development, 2019. https://doi.org/10.1787/2e828dea-en.
Citácia podľa MLA (8th ed.)International Energy Agency, IEA (Paris, France). World Energy Statistics 2019. Organisation for Economic Co-operation and Development, 2019. https://doi.org/10.1787/2e828dea-en.
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