Chinn, P. C., Drew, C. J., & Logan, D. R. (1975). Mental Retardation: A life cycle approach. Mosby.
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Dyfyniad Arddull Chicago
Chinn, Philip C., Clifford J. Drew, and Don R. Logan. Mental Retardation: A Life Cycle Approach. Saint Louis: Mosby, 1975.
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Dyfyniad MLA
Chinn, Philip C., et al. Mental Retardation: A Life Cycle Approach. Mosby, 1975.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.