Geiriadur termau 
editor Jac L. Williams 
 - Caerdydd  Gwasg Prifysgol Cymru  1973 
 - xiv, 544 p. ; 22 cm. 
<br/><br/><br/>engwsl 
<br/><br/><label>ISBN: </label>0708305180 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Dictionaries--Welsh
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Welsh language--Dictionaries--English