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Dyfyniad Arddull ChicagoHsiao, Cheng. Analysis of Panel Data. 2nd ed. Cambridge ; New York: Cambridge University Press, 2003.
Dyfyniad MLAHsiao, Cheng. Analysis of Panel Data. 2nd ed. Cambridge University Press, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.