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Dyfyniad Arddull ChicagoLerner, Janent W. Theories Diagnosis Teaching Strategies/2e: Children with Learning Disabilities. 2nd ed. Boston: Houghton mifflin company, 1976.
Dyfyniad MLALerner, Janent W. Theories Diagnosis Teaching Strategies/2e: Children with Learning Disabilities. 2nd ed. Houghton mifflin company, 1976.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.