USBORNE NICK. (2002). NET WORDS: CREATING HIGH IMPACT ONLINE COPY. MCGRAW-HILL.
Dyfyniad Arddull ChicagoUSBORNE NICK. NET WORDS: CREATING HIGH IMPACT ONLINE COPY. NEW YORK: MCGRAW-HILL, 2002.
Dyfyniad MLAUSBORNE NICK. NET WORDS: CREATING HIGH IMPACT ONLINE COPY. MCGRAW-HILL, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.