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Dyfyniad Arddull ChicagoInternational Standard Classification of Education: ISCED 2011. Montreal, Quebec: UNESCO Institute for Statistics, 2012.
Dyfyniad MLAInternational Standard Classification of Education: ISCED 2011. Montreal, Quebec: UNESCO Institute for Statistics, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.