Azar, Betty Schrampfer,  1941- <br/><br/>
Understanding and using English grammar :   with answer key / 
Betty S. Azar, Stacy A. Hagen 
 - 4th ed. 
 - White Plains, NY :  Pearson Education,  c2009 
 - 530 p. :  col. ill. ;  26 cm. +  2 sound discs (4 3/4 in.) 
<br/><br/><label>ISBN: </label>9780132333313 (with audio) 9780132333337 (with audio) 0132333333 (with audio) 0132464500 (with audio and answer key) 0132333317 (with audio and answer key) 9780132464505 (pbk. with answer key) 
<br/><br/><label>LCCN: </label>2008050357 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Textbooks for foreign speakers<br/>English language--Grammar--Problems, exercises, etc.
<br/><br/><label>LC Class. No.: </label>PE1128  / A992Ua 2009