Azar, Betty Schrampfer, <br/><br/>
Understanding and using English grammar :  with answer key/  [book] 
 English grammar 
Betty Schrampfer Azar 
 - 4th ed. 
 - White Plains, N.Y. :  Longman,  c2009. 
 - xiii, 530 p. :  ill.+  2 CD-ROM 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9780132464505 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language<br/>English language--Grammar
<br/><br/><label>LC Class. No.: </label>PE1128  / .A992 2009