Azar, Betty Schrampfer,  1941- <br/><br/>
Understanding and using English grammar / 
Betty Schrampfer Azar. 
 - 2nd ed. 
 - Englewood Cliffs, NJ :  Prentice Hall,  c1989. 
 - xvi, 411 p. :  ill. ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0139436146 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Grammar.<br/>English language--Grammar--Problems, exercises, etc.<br/>English language--Textbooks for foreign speakers.