Labov, William <br/><br/>
Sociolinguistic Patterns 
/by William Labov 
 - UK:  University Of Pennsylvania Press,Inc;  1972. 
 - 344p. 
<br/><br/><label>ISBN: </label>06317720 
<br/><br/><label>Dewey Class. No.: </label>301.21  / LAB/S