Clifford, Sarah Hutchinson. <br/><br/>
Lotus 1-2-3 for Windows, release 4 / 
Sarah E. Hutchinson, Stacey C. Sawyer, Glen J. Coulthard. 
 - Chicago :  Irwin,  c1995. 
 - x, 199 p. :  ill. ;  28 cm. 
 - The Irwin advantage series for computer education .