Pollard, S. (1990). Wealth and poverty: An economic history of the twentieth century. Oxford University Press.
Dyfyniad Arddull ChicagoPollard, Sidney. Wealth and Poverty: An Economic History of the Twentieth Century. Oxford: Oxford University Press, 1990.
Dyfyniad MLAPollard, Sidney. Wealth and Poverty: An Economic History of the Twentieth Century. Oxford University Press, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.