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Dyfyniad Arddull ChicagoLoewen, Shawn. Key Concepts in Second Language Acquisition. Basingstoke: Palgrave Macmillan, 2011.
Dyfyniad MLALoewen, Shawn. Key Concepts in Second Language Acquisition. Basingstoke: Palgrave Macmillan, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.