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Dyfyniad Arddull ChicagoWalker, Jan. Psichology for Nurses and the Caring Professions. Mc Graw-Hill, 2005.
Dyfyniad MLAWalker, Jan. Psichology for Nurses and the Caring Professions. Mc Graw-Hill, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.