Gips, J. (1997). Mastering Excel: A problem-solving approach. Wiley.
Cita Chicago (17th ed.)Gips, James. Mastering Excel: A Problem-solving Approach. New York: Wiley, 1997.
Cita MLA (9th ed.)Gips, James. Mastering Excel: A Problem-solving Approach. Wiley, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.