A manual of style :  for authors, editors, and copywriters. 

 - 12th ed. rev. 
 - Chicago ;  University of Chicago Press,  1969. 
 - ix, 546 p. 
<br/><br/><label>ISBN: </label>0226770087. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Printing--Style.<br/>Authorship--Style manuals.