Murphy, Raymond <br/><br/>
Essential grammar in use :  A self-study reference and practice book for elementary students of English ; With answers / 
Raymond Murphy 
 - 2. ed. 
 - Cambridge :  Cambridge Univ. Pr.,  1997. 
 - 300 p. :  illust. ;  24 cm 
<br/><br/><label>ISBN: </label>0-521-55928-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language