Gratian Vas <br/><br/>
Word perfect :  [a definitive guide to the correct usage of words in different situations] / 
Gratian Vas 
 - Petaling Jaya, Selangor :  Unipress Publ.,  2006 
 - 256 p. ;  22 cm. 
 - Enrich your grammar .
<br/><br/><label>ISBN: </label>9833733562X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Verb phrase--Dictionaries