APA
United Nations Economic Commission for Europe, United Nations Economic Commission for Europe, . (1997). European provisions concerning the international c. New York: United Nations USA.
Chicago
United Nations Economic Commission for Europe, United Nations Economic Commission for Europe, . 1997. European provisions concerning the international c. New York: United Nations USA.
Harvard
United Nations Economic Commission for Europe, United Nations Economic Commission for Europe, . (1997). European provisions concerning the international c. New York: United Nations USA.
MLA
United Nations Economic Commission for Europe, United Nations Economic Commission for Europe, . European provisions concerning the international c. New York: United Nations USA. 1997.