WordPerfect. 

 - Orem, Utah :  WordPerfect Corporation,  1989. 
 - 553 p. ;  23 cm. 
<br/><br/> Closed access. 
<br/><br/><label>ISBN: </label>1556922000 
<br/><br/><label>Subjects--Topical Terms: </label><br/>WordPerfect--Handbooks, manuals, etc.<br/>Word processing--Computer programs--Handbooks, manuals, etc.<br/>Electronic data processing--Handbooks, manuals, etc.