Zinsser, William <br/><br/>
On writing well :  an informal guide to writing nonfiction / 
William Zinsser. 
 - 4th ed., rev., updated & expanded 
 - New York :  Harper Perennial,  c1990. 
 - xiii, 288p. 
<br/><br/> 1st Perennial Library ed. Includes sources and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Rhetoric<br/>Exposition (Rhetoric)