Linguistic variation :  Models and methods / 
Ed. by David Sankoff. 
 - New York :  Academic Press,  1978. 
 - xvii, 296 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliogr. references and indexes. 
<br/><br/><label>ISBN: </label>0126188505 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Language and languages--Variation
<br/><br/><label>Dewey Class. No.: </label>301.2/1