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Dyfyniad Arddull ChicagoREUWER, Paul, Hein Bruines, and Arie Franx. Proactive Support of Labor: The Challenge of Normal Childbirth. Cambridge University Press, 2009.
Dyfyniad MLAREUWER, Paul, et al. Proactive Support of Labor: The Challenge of Normal Childbirth. Cambridge University Press, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.