Guffey, Mary Ellen. <br/><br/>
Business English / 
Mary Ellen Guffey, Carolyn M. Seefer. 
 - 10th ed. 
 - Mason, Ohio :  South Western Cengage Learning,  c2011. 
 - xvi, 544 p. :  ill. (chiefly col.) ; 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9780324789751 (pbk.) 0324789742 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language<br/>English language--Problems, exercises, etc.