United Nations. Economic Commission for Europe. (1976). Increased energy economy and efficiency in the ECE region: Study on measures taken, or which might be taken, to achieve increased economy and efficiency in the extraction, conversion, transport, and use of energy in the ECE region. United Nations.
Cita Chicago (17th ed.)United Nations. Economic Commission for Europe. Increased Energy Economy and Efficiency in the ECE Region: Study on Measures Taken, or Which Might Be Taken, to Achieve Increased Economy and Efficiency in the Extraction, Conversion, Transport, and Use of Energy in the ECE Region. New York: United Nations, 1976.
Cita MLA (9th ed.)United Nations. Economic Commission for Europe. Increased Energy Economy and Efficiency in the ECE Region: Study on Measures Taken, or Which Might Be Taken, to Achieve Increased Economy and Efficiency in the Extraction, Conversion, Transport, and Use of Energy in the ECE Region. United Nations, 1976.