Spiegler, M. D. (2003). Contemporary behaviour therapy (4th ed.). Wadsworth.
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Dyfyniad Arddull Chicago
Spiegler, Michael D. Contemporary Behaviour Therapy. 4th ed. Thomson: Wadsworth, 2003.
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Dyfyniad MLA
Spiegler, Michael D. Contemporary Behaviour Therapy. 4th ed. Wadsworth, 2003.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.