APA (7th ed.) Citation

United Nations Symposium on State Petroleum Enterprises in Developing Countries Vienna, Austria. (1980). State petroleum enterprises in developing countries. Published for the United Nations [by] Pergamon Press.

Chicago Style (17th ed.) Citation

United Nations Symposium on State Petroleum Enterprises in Developing Countries Vienna, Austria. State Petroleum Enterprises in Developing Countries. New York: Published for the United Nations [by] Pergamon Press, 1980.

MLA (9th ed.) Citation

United Nations Symposium on State Petroleum Enterprises in Developing Countries Vienna, Austria. State Petroleum Enterprises in Developing Countries. Published for the United Nations [by] Pergamon Press, 1980.