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Dyfyniad Arddull ChicagoGaddes, William H. Learning Disabilities and Brain Function: A Neuropsychological Approach. New York: Springer-Verlag, 1980.
Dyfyniad MLAGaddes, William H. Learning Disabilities and Brain Function: A Neuropsychological Approach. Springer-Verlag, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.