APA (7th ed.) Citation

United Nations. Economic Commission for Europe & Symposium of the Committee on Gas, Economic Commission for Europe (ECE). (1990). Underground storage of natural gas and LPG. United Nations.

Chicago Style (17th ed.) Citation

United Nations. Economic Commission for Europe and Economic Commission for Europe (ECE) Symposium of the Committee on Gas. Underground Storage of Natural Gas and LPG. New York: United Nations, 1990.

MLA (9th ed.) Citation

United Nations. Economic Commission for Europe and Economic Commission for Europe (ECE) Symposium of the Committee on Gas. Underground Storage of Natural Gas and LPG. United Nations, 1990.