Johnson, S. W., & Morasky, R. L. (1980). Learning disabilities (2nd ed.). Allyn and Bacon.
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Dyfyniad Arddull Chicago
Johnson, Stanley W., and Robert L. Morasky. Learning Disabilities. 2nd ed. Boston: Allyn and Bacon, 1980.
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Dyfyniad MLA
Johnson, Stanley W., and Robert L. Morasky. Learning Disabilities. 2nd ed. Allyn and Bacon, 1980.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.