Tohutoro APA (7th ed.)
International Energy Agency, Organisation for Economic Co-operation and Development, & ProQuest (Firm). (2008). Natural gas information: With 2007 data. OECD/IEA.
Tohutoru Kātū Chicago (17th ed.)
International Energy Agency, Organisation for Economic Co-operation and Development, me ProQuest (Firm). Natural Gas Information: With 2007 Data. Paris: OECD/IEA, 2008.
Tohutoro MLA (9th ed.)
International Energy Agency, et al. Natural Gas Information: With 2007 Data. OECD/IEA, 2008.
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