Saret, Laura. Using software tools : WordStar 4.0, VP-planner/Lotus, and dBase III plus / Laura Saret, Peter Dublin. - New York : McGraw-Hill Book Co., c1988. - xi, 20, [367] p. : ill. ; 28 cm. ISBN: 0070548706 (pbk.) LCCN: 88141100 LC Class. No.: QA76.754 .S275 1988 / .S275 1988 Dewey Class. No.: 005.36/5