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Dyfyniad Arddull ChicagoGardner, John. Assessment and Learning. Thousand Oaks, CA: Sage Publications, 2006.
Dyfyniad MLAGardner, John. Assessment and Learning. Sage Publications, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.