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Dyfyniad Arddull ChicagoWoodward, John D. Jr, Nicholas M. Orlans, and Peter T. Higgins. Biometrics. New York: McGraw-Hill/Osborne, 2003.
Dyfyniad MLAWoodward, John D. Jr, et al. Biometrics. McGraw-Hill/Osborne, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.