Ramon Zamora, Frances Saito, And Bob Albrecht <br/><br/>
The Shareware Book: Using Pc-Write, Pc-File+, And Pc- Calc+ 

 - 2nd ed 
 -   Mcgraw-Hill/Osborne  ©1990 
<br/><br/><label>ISBN: </label>78815916  22.95 
<br/><br/><label>Dewey Class. No.: </label>005.362/ZAM