United Nations. Department of Economic and Social Information and Policy Analysis Statistical Division. (2001). Energy statistics yearbook =: Annuaire des statistiques de l'énergie. United Nations.
芝加哥风格引文United Nations. Department of Economic and Social Information and Policy Analysis Statistical Division. Energy Statistics Yearbook =: Annuaire Des Statistiques De L'énergie. New York: United Nations, 2001.
MLA引文United Nations. Department of Economic and Social Information and Policy Analysis Statistical Division. Energy Statistics Yearbook =: Annuaire Des Statistiques De L'énergie. United Nations, 2001.
警告：这些引文格式不一定是100％准确.