Não informado. (2019). Energy Prices and Taxes. International Energy Agency, Organisation for Economic Co-operation and Development.
Lua i Stíl Chicago (17ú heag.)Não informado. Energy Prices and Taxes. Paris: International Energy Agency, Organisation for Economic Co-operation and Development, 2019.
Lua MLA (8ú heag.)Não informado. Energy Prices and Taxes. International Energy Agency, Organisation for Economic Co-operation and Development, 2019.
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