Grupe, F. H. (1990). Microcomputer applications: Using Wordperfect 5.0, Lotus 1-2-3, and dBASE III PLUS. W.C. Brown.
Chicago Style (17th ed.) CitationGrupe, Fritz H. Microcomputer Applications: Using Wordperfect 5.0, Lotus 1-2-3, and DBASE III PLUS. Dubuque, IA: W.C. Brown, 1990.
MLA (9th ed.) CitationGrupe, Fritz H. Microcomputer Applications: Using Wordperfect 5.0, Lotus 1-2-3, and DBASE III PLUS. W.C. Brown, 1990.
Warning: These citations may not always be 100% accurate.