Biber, Douglas. <br/><br/>
Variation across speech and writing / 
Douglas Biber. 
 - Cambridge [England] ;  New York :  Cambridge University Press,  1988. 
 - xv, 299 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0521425565 
<br/><br/><label>LCCN: </label>87-038213 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Language and languages--Variation.<br/>Oral communication.<br/>Written communication.
<br/><br/><label>Dewey Class. No.: </label>302.2