McBeth, R. S. (1919). Oil: The new monarch of motion : an unbiased presentation of the whole oil industry. Markets Publishing Corp..
Dyfyniad Arddull ChicagoMcBeth, Reid Sayers. Oil: The New Monarch of Motion : An Unbiased Presentation of the Whole Oil Industry. New York: Markets Publishing Corp., 1919.
Dyfyniad MLAMcBeth, Reid Sayers. Oil: The New Monarch of Motion : An Unbiased Presentation of the Whole Oil Industry. Markets Publishing Corp., 1919.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.