Economic Commission for Europe- UN. (1992). East -West Energy Efficiency: The Ace Energy Series. United Nations.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEconomic Commission for Europe- UN. East -West Energy Efficiency: The Ace Energy Series. New York: United Nations, 1992.
एमएलए (9वां संस्करण) प्रशस्ति पत्रEconomic Commission for Europe- UN. East -West Energy Efficiency: The Ace Energy Series. United Nations, 1992.
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