SHELLY, Gary B. - CASHMAN, Thomas J. Learning To Use SUPERCALC3, dBASE III, and WORDSTAR 3.3 : An Introduction. 1. ed. Boston : Boyd and Fraser Pub. Co., 1986. Prer. s. ISBN 0-87835-208-2. [Počet ex. : 2, z toho voľných 2, prezenčne 0]