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Dyfyniad Arddull ChicagoUnited Nations. Department of Economic and Social Affairs. Population Division. Family-building and Family Planning Evaluation. New York: United Nations, 1997.
Dyfyniad MLAUnited Nations. Department of Economic and Social Affairs. Population Division. Family-building and Family Planning Evaluation. United Nations, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.