Dyfyniad APA

Lipsey, R. (2015). Economics (13th.). Oxford University Press.

Dyfyniad Arddull Chicago

Lipsey, Richard. Economics. 13th. Oxford: Oxford University Press, 2015.

Dyfyniad MLA

Lipsey, Richard. Economics. 13th. Oxford University Press, 2015.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.