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Dyfyniad Arddull ChicagoWorld Institute for Development Economics Research, Martha Craven Nussbaum, and Amartya Kumar Sen. The Quality of Life. Oxford [England] : New York: Clarendon Press ; Oxford University Press, 1993.
Dyfyniad MLAWorld Institute for Development Economics Research, et al. The Quality of Life. Clarendon Press ; Oxford University Press, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.