Poole, Lon <br/><br/>
Apple II user's guide 
by Lon Poole with Martin McNiff & Steven Cook 
 - Berkeley, CA.  Osborne McGraw-Hill  1981 
 - 386 p. : ill. ; 24 cm. 
<br/><br/>p. 371-372 
<br/><br/><label>ISBN: </label>0931988462 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Apple computer--Programming