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Dyfyniad Arddull Chicago.Ray, S. K. Economics of the Third World. New Delhi: Prentice-Hall of India, 1983.
Dyfyniad MLA.Ray, S. K. Economics of the Third World. Prentice-Hall of India, 1983.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.