International Energy Agency (IEA) & Organisation for Economic Co-operation and Development (OECD). (1992). Energy policies. Czech and Slovak Federal Republic. OECD/IEA.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रInternational Energy Agency (IEA) और Organisation for Economic Co-operation and Development (OECD). Energy Policies. Czech and Slovak Federal Republic. Paris: OECD/IEA, 1992.
एमएलए (8वां संस्करण) प्रशस्ति पत्रInternational Energy Agency (IEA) और Organisation for Economic Co-operation and Development (OECD). Energy Policies. Czech and Slovak Federal Republic. OECD/IEA, 1992.
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