Dyfyniad APA

(2013). Skills for effective writing. Cambridge: Cambridge University Press.

Dyfyniad Arddull Chicago

Skills for Effective Writing. Cambridge: Cambridge University Press, 2013.

Dyfyniad MLA

Skills for Effective Writing. Cambridge: Cambridge University Press, 2013.

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