Organisation for Economic Co-operation and Development, OECD (Paris, France). (2009). Natural gas information: 2009 with 2008 data. OECD. https://doi.org/10.1787/nat_gas-2009-en
Citace podle Chicago (17th ed.)Organisation for Economic Co-operation and Development, OECD (Paris, France). Natural Gas Information: 2009 with 2008 Data. Paris: OECD, 2009. https://doi.org/10.1787/nat_gas-2009-en.
Citace podle MLA (9th ed.)Organisation for Economic Co-operation and Development, OECD (Paris, France). Natural Gas Information: 2009 with 2008 Data. OECD, 2009. https://doi.org/10.1787/nat_gas-2009-en.
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