Barber, W. J. (1967). A History of economic thought. Penguin books.
Dyfyniad Arddull ChicagoBarber, William J. A History of Economic Thought. England: Penguin books, 1967.
Dyfyniad MLABarber, William J. A History of Economic Thought. Penguin books, 1967.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.