Organisation for Economic Co-operation and Development, OECD (Paris, France). (2012). Coal information: 2012 with data 2011. OECD. https://doi.org/10.1787/coal-2012-en
Citace podle Chicago (17th ed.)Organisation for Economic Co-operation and Development, OECD (Paris, France). Coal Information: 2012 with Data 2011. Paris: OECD, 2012. https://doi.org/10.1787/coal-2012-en.
Citace podle MLA (9th ed.)Organisation for Economic Co-operation and Development, OECD (Paris, France). Coal Information: 2012 with Data 2011. OECD, 2012. https://doi.org/10.1787/coal-2012-en.
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