(1990). Teachng writing skills.
Dyfyniad Arddull ChicagoTeachng Writing Skills. 1990.
Dyfyniad MLATeachng Writing Skills. 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.
Dyfyniad APA
(1990). Teachng writing skills.
Dyfyniad Arddull ChicagoTeachng Writing Skills. 1990.
Dyfyniad MLATeachng Writing Skills. 1990.