Crystal, David  <br/><br/>
Introducing linguistics / 
David Crystal 
 - 1a ed. 
 - London :   Penguin English,   1992 
 - 77 p. :  il. ;  20 cm. 
 - Penguin English linguistics .
<br/><br/><label>ISBN: </label>014081017X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lingüística 
<br/><br/><label>LC Class. No.: </label>P121  / C79 1992