Cobb, S. T. (1988). Using Quattro: The professional spreadsheet. Borland-Osborne/McGraw-Hill.
Cita Chicago (17th ed.)Cobb, Stephen T. Using Quattro: The Professional Spreadsheet. [Berkeley, Calif.]: Borland-Osborne/McGraw-Hill, 1988.
Cita MLA (9th ed.)Cobb, Stephen T. Using Quattro: The Professional Spreadsheet. Borland-Osborne/McGraw-Hill, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.