APA (7th ed.) Citation

United Nations. Economic Commission for Europe. (1990). Membrane technology in the chemical industry. United Nations.

Chicago Style (17th ed.) Citation

United Nations. Economic Commission for Europe. Membrane Technology in the Chemical Industry. New York: United Nations, 1990.

MLA (9th ed.) Citation

United Nations. Economic Commission for Europe. Membrane Technology in the Chemical Industry. United Nations, 1990.