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Dyfyniad Arddull ChicagoAmerican Orthopsychiatric Association, Edward Zigler, and Edmund W. Gordon. Day Care: Scientific and Social Policy Issues. Boston: Auburn House, 1982.
Dyfyniad MLAAmerican Orthopsychiatric Association, et al. Day Care: Scientific and Social Policy Issues. Auburn House, 1982.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.