Robbins, L. (1954). The economist in the twentieth century. New York: MacMillan & Co, Ltd.
Dyfyniad Arddull ChicagoRobbins, Lionel. The Economist in the Twentieth Century. New York: MacMillan & Co, Ltd, 1954.
Dyfyniad MLARobbins, Lionel. The Economist in the Twentieth Century. New York: MacMillan & Co, Ltd, 1954.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.