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Dyfyniad Arddull ChicagoSabine,P, and Plumpton,C. Probability. London: Mac Millan Education, 1985.
Dyfyniad MLASabine,P, and Plumpton,C. Probability. Mac Millan Education, 1985.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.