Crystal, David . <br/><br/>
Investigating english style /  
David Crystal and Derek Davy. 
 - Longman :   Longman Group ,   1969. 
 - xii,264p. :   ill ;   22cm .  
<br/><br/>Include index 
<br/><br/><label>ISBN: </label>0582550114  UKP 8.50 
<br/><br/><label>Subjects--Index Terms: </label>ENGLISH-LANGUAGE 
<br/><br/><label>Dewey Class. No.: </label>420.1  / CRY/I