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Dyfyniad Arddull ChicagoGoldstein, Larry Joel, David I. Schneider, and Martha J. Spiegel. Finite Mathematics and Its Applications. 4th., instructors ed. Englewood Cliffs, N.J: Prentice Hall, 1991.
Dyfyniad MLAGoldstein, Larry Joel, et al. Finite Mathematics and Its Applications. 4th., instructors ed. Prentice Hall, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.