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Dyfyniad Arddull ChicagoHolm-Nielsen, Lauritz. Brazil: Education Sector Study. Brasil: World Bank, 2000.
Dyfyniad MLAHolm-Nielsen, Lauritz. Brazil: Education Sector Study. World Bank, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.