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Dyfyniad Arddull ChicagoLowdermilk, Deitra Leonard, and Shannon E. Perry. Maternity Nursing. 7th ed. Singapore: Elsevier (Singapore) Pte Ltd, 2007.
Dyfyniad MLALowdermilk, Deitra Leonard, and Shannon E. Perry. Maternity Nursing. 7th ed. Elsevier (Singapore) Pte Ltd, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.