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Dyfyniad Arddull ChicagoSoifer, Alexander. How Does One Cut a Triangle? .- 2nd Ed. 2nd ed. New York ; London: Springer, 2009.
Dyfyniad MLASoifer, Alexander. How Does One Cut a Triangle? .- 2nd Ed. 2nd ed. Springer, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.