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Dyfyniad Arddull ChicagoUllrich, David C. Complex Made Simple. Providence, R.I.: American Mathematical Society, 2008.
Dyfyniad MLAUllrich, David C. Complex Made Simple. American Mathematical Society, 2008.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.