Gordon, R. (1966). Readings in business cycles. George Allen & Unwin.
Dyfyniad Arddull ChicagoGordon, R. Readings in Business Cycles. London: George Allen & Unwin, 1966.
Dyfyniad MLAGordon, R. Readings in Business Cycles. George Allen & Unwin, 1966.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.