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Dyfyniad Arddull ChicagoSchwarz, Eleanor Bimla, Barbara Gerbert, and Ralph Gonzales. Computer-assisted Provision of Emergency Contraception a Randomized Controlled Trial. Springer-Verlag, 2008.
Dyfyniad MLASchwarz, Eleanor Bimla, Barbara Gerbert, and Ralph Gonzales. Computer-assisted Provision of Emergency Contraception a Randomized Controlled Trial. Springer-Verlag, 2008.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.