Preston, Dennis R. <br/><br/>
Sociolinguistics and second language acquisition 
/ Dennis R. Preston 
. - New York  : B. Blackwell, 1989
. - XV-326 p.  ; 23 cm. 
 - Language in Society .
<br/><br/>Bibliogr., index 
<br/><br/><label>Source: </label> Don Britannique 
<br/><br/><label>Universal Decimal Class. No.: </label>800.931.