(2003). College writing skills.
Dyfyniad Arddull ChicagoCollege Writing Skills. 2003.
Dyfyniad MLACollege Writing Skills. 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.
Dyfyniad APA
(2003). College writing skills.
Dyfyniad Arddull ChicagoCollege Writing Skills. 2003.
Dyfyniad MLACollege Writing Skills. 2003.