Dyfyniad APA

Comfort, J. (1995). Effective presentations. Oxford: Oxford University Press.

Dyfyniad Arddull Chicago

Comfort, Jeremy. Effective Presentations. Oxford: Oxford University Press, 1995.

Dyfyniad MLA

Comfort, Jeremy. Effective Presentations. Oxford: Oxford University Press, 1995.

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