Lipsey Richard G. (2004). Economics (10th.). Oxford University Press.
Dyfyniad Arddull ChicagoLipsey Richard G. Economics. 10th. New Delhi: Oxford University Press, 2004.
Dyfyniad MLALipsey Richard G. Economics. 10th. Oxford University Press, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.