Class, codes and control / 
Basil Bernstein. 
 - London :  Routledge & Kegan Paul,  1971-90. 
 - 4 v. : 
<br/><br/><label>ISBN: </label>0710073968 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sociolinguistics.
<br/><br/><label>Dewey Class. No.: </label>306.43  / Cl