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Dyfyniad Arddull ChicagoDevelopments in the Rorschach Technique. New York: Harcourt, Brace & World, Inc, 1954.
Dyfyniad MLADevelopments in the Rorschach Technique. New York: Harcourt, Brace & World, Inc, 1954.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.