Wardhaugh, Ronald. <br/><br/>
Introduction to linguistics. 

 - New York  McGraw-Hill  [1971, c1972] 
 - viii, 239 p.  illus.  23 cm. 
<br/><br/> 920331 
<br/><br/>Bibliography: p. 223-229. 
<br/><br/><label>ISBN: </label>0070681503 
<br/><br/><label>LCCN: </label>70168458  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Linguistics
<br/><br/><label>LC Class. No.: </label>P121  / .W22 
<br/><br/><label>Dewey Class. No.: </label>410