Dyfyniad APA

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.

Dyfyniad Arddull Chicago

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.

Dyfyniad MLA

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.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.