Langan, John. <br/><br/>
English skills with readings / 
John Langan. 
 - 7th ed. 
 - Boston, MA :  McGraw-Hill,  2005. 
 - xxii, 792 P.:  ill.;  24 cm 
<br/><br/><label>ISBN: </label>9780073350141 
<br/><br/><label>LCCN: </label>2005929285 
<br/><br/><label>LC Class. No.: </label>PE1408  / LAN 2008