Warrner, T. W. (1989). Using Lotus 1-2-3, superCalc4, Wordperfect, WordStar, and dBASE III plus (Revised edition with WordPerfect 4.2 and 5.0.). Scott, Foresman and Company.
Citace podle Chicago (17th ed.)Warrner, Thomas W. Using Lotus 1-2-3, SuperCalc4, Wordperfect, WordStar, and DBASE III Plus. Revised edition with WordPerfect 4.2 and 5.0. Glenview, Illinois: Scott, Foresman and Company, 1989.
Citace podle MLA (9th ed.)Warrner, Thomas W. Using Lotus 1-2-3, SuperCalc4, Wordperfect, WordStar, and DBASE III Plus. Revised edition with WordPerfect 4.2 and 5.0. Scott, Foresman and Company, 1989.
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