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Dyfyniad Arddull ChicagoAppropriate Technologies for Third World Development: Proceedings of a Conference Held By the International Economic Association At Teheran, Iran. London: The Macmillan Press, 1979.
Dyfyniad MLAAppropriate Technologies for Third World Development: Proceedings of a Conference Held By the International Economic Association At Teheran, Iran. London: The Macmillan Press, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.