The Use of Welsh:  a contribution to sociolinguistics / 
edited by Martin J. Ball. 
 - Clevedon, England :  Multilingual Matters,  1988. 
 - x, 341 p. :  ill., maps 
 - Multilingual matters ;  36 .
<br/><br/><label>ISBN: </label>0905028996 0905028988 (pbk.) 
<br/><br/><label>LCCN: </label>88901464       
<br/><br/><label>Subjects--Topical Terms: </label><br/>Welsh language--Variation.<br/>Welsh language--Usage.