Dyfyniad APA

Irvine, M. (1999). Commercially speaking. Oxford: Oxford University Press.

Dyfyniad Arddull Chicago

Irvine, Mark. Commercially Speaking. Oxford: Oxford University Press, 1999.

Dyfyniad MLA

Irvine, Mark. Commercially Speaking. Oxford: Oxford University Press, 1999.

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