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Dyfyniad Arddull Chicago.Wionczek, Miguel S. World Hydrocarbon Markets: Current Status, Projected Prospects, and Future Trends. [Oxford [Oxfordshire ; New York: Pergamon Press, 1983.
Dyfyniad MLA.Wionczek, Miguel S. World Hydrocarbon Markets: Current Status, Projected Prospects, and Future Trends. Pergamon Press, 1983.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.