Day, J. (1986). Microcomputers in business: Spreadsheet, word processing, and database management systems. Scott, Foresman and Company.
Chicago-viite (17. p.)Day, John. Microcomputers in Business: Spreadsheet, Word Processing, and Database Management Systems. Glenview, Illinoi: Scott, Foresman and Company, 1986.
MLA-viite (9. p.)Day, John. Microcomputers in Business: Spreadsheet, Word Processing, and Database Management Systems. Scott, Foresman and Company, 1986.
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