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Dyfyniad Arddull ChicagoParker, Randall E,ed. Economics of the Great Depression: A Twenty-first Century Lookback at the Economics of the Interwar Era. Cheltenham: Edward Elgar, 2007.
Dyfyniad MLAParker, Randall E,ed. Economics of the Great Depression: A Twenty-first Century Lookback at the Economics of the Interwar Era. Edward Elgar, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.