Dyfyniad APA
(1993). How to write and speak better (ed.). The reader's digest association.
Dyfyniad Arddull Chicago
How to Write and Speak Better. ed. Cape town: The reader's digest association, 1993.
Dyfyniad MLA
How to Write and Speak Better. ed. The reader's digest association, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.