Grammatik 5 :  the #1 grammar & style checker 
by reference software 
 - San Francisco:  Reference software International,  1992 
 - [ca. 119 p. ] :  ill. ;  23cm. 
<br/><br/>Includes index 
<br/><br/><br/>English text 
<br/><br/><label>ISBN: </label>742171