Murphy, Raymond. <br/><br/>
Essential grammer in use :  a Self -study reference and practice book for elementary students of english with answer / 
Raymond Murphy. 
 - New Delhi :  Cambridge University Press,  2007. 
 - xi, 319 p. :  ill. ;  22 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9780521133937 0521133939 
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>Dewey Class. No.: </label>428.24  / MUE 2014