APA
United Nations E. C. f. E., . (1967). (The)legal status of international gas pipelines. New York: The Author.
Chicago
United Nations Economic Commission for Europe, . 1967. (The)legal status of international gas pipelines. New York: The Author.
Harvard
United Nations E. C. f. E., . (1967). (The)legal status of international gas pipelines. New York: The Author.
MLA
United Nations Economic Commission for Europe, . (The)legal status of international gas pipelines. New York: The Author. 1967.