Economic Commission for Europe- UN. (1992). East -West Energy Efficiency: The Ace Energy Series. United Nations.
Citace podle Chicago (17th ed.)Economic Commission for Europe- UN. East -West Energy Efficiency: The Ace Energy Series. New York: United Nations, 1992.
Citace podle MLA (9th ed.)Economic Commission for Europe- UN. East -West Energy Efficiency: The Ace Energy Series. United Nations, 1992.