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Dyfyniad Arddull ChicagoJackson,J.Edward. A User's Guide to Principal Components. New York: John Wiley & Sons, 2003.
Dyfyniad MLAJackson,J.Edward. A User's Guide to Principal Components. John Wiley & Sons, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.