Mae Welsh in Twelve Weeks yn gyflwyniad i eirfa hanfodol a phrif elfennau gramadeg ym maes dysgu Cymraeg.
Gwasg Carreg Gwalch, Gwasg Carreg Gwalch
HarperCollins,Brookes, IanO'Neill, Mary
8th September, 2017
Hannahs, S. J.
4th November, 2013
Davies, Cennard
1st September, 2015