Dyfyniad APA

Comfort, J. (1996). Effective telephoning. Oxford: Oxford University Press.

Dyfyniad Arddull Chicago

Comfort, Jeremy. Effective Telephoning. Oxford: Oxford University Press, 1996.

Dyfyniad MLA

Comfort, Jeremy. Effective Telephoning. Oxford: Oxford University Press, 1996.

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