APA (7 वां संस्करण) प्रशस्ति पत्र
Organisation for Economic Co-operation and Development, International Energy Agency, & ProQuest (Firm). (2011). Energy statistics of OECD countries (2011 ed.). OECD/IEA.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Organisation for Economic Co-operation and Development, International Energy Agency, और ProQuest (Firm). Energy Statistics of OECD Countries. 2011 ed. Paris: OECD/IEA, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Organisation for Economic Co-operation and Development, et al. Energy Statistics of OECD Countries. 2011 ed. OECD/IEA, 2011.
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