Brown, Judith R. <br/><br/>
Programming the user interface  principles and examples / 
Judith R. Brown, Steve Cunningham 
 - New York :  John Wiley & Sons,  1989 
 - 371 p. :   ill. ;   24 cm. 
<br/><br/>p. 355 - 363 
<br/><br/><label>ISBN: </label>0471638439 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic digital computers--Programming<br/>User interfaces (Computer systems)