Mae Welsh in Twelve Weeks yn gyflwyniad i eirfa hanfodol a phrif elfennau gramadeg ym maes dysgu Cymraeg.
Gwasg Carreg Gwalch, Gwasg Carreg Gwalch
Williams, RaymondWilliams, Daniel
14th February, 2018
Parry, R. Gwynedd
4th July, 2012
Howell, Ray
8th March, 2022
