William, Labov <br/><br/>
Sociolinguistic patterns / 
William Labov. 
 - Philadelphia :  University of Pennsylvania Press,  1972. 
 - xviii, 344 pages :  illustrations. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0812210522 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sociolinguistics.
<br/><br/><label>LC Class. No.: </label>P 41  / LAB 1972