Symposium on the Gasification and Liquefaction of Coal Katowice, Poland, ScienceDirect (Online service), United Nations, & United Nations. Economic Commission for Europe. (1980). Oils and gases from coal. Published for the United Nations by Pergamon Press.
Chicago Style (17th ed.) CitationSymposium on the Gasification and Liquefaction of Coal Katowice, Poland, ScienceDirect (Online service), United Nations, and United Nations. Economic Commission for Europe. Oils and Gases from Coal. Oxford, Eng. ; New York: Published for the United Nations by Pergamon Press, 1980.
MLA (9th ed.) CitationSymposium on the Gasification and Liquefaction of Coal Katowice, Poland, et al. Oils and Gases from Coal. Published for the United Nations by Pergamon Press, 1980.
Warning: These citations may not always be 100% accurate.