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Dyfyniad Arddull ChicagoPocock, Stuart J. Clinical Trials: A Practical Approach. Chichester [West Sussex] ; New York: Wiley, 1983.
Dyfyniad MLAPocock, Stuart J. Clinical Trials: A Practical Approach. Wiley, 1983.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.