Cita APA (7th ed.)
Harris, M. (1999). Sams teach yourself Microsoft Excel 2000 programming in 21 days. Techmedia.
Cita Chicago (17th ed.)
Harris, Matthew. Sams Teach Yourself Microsoft Excel 2000 Programming in 21 Days. New Delhi: Techmedia, 1999.
Cita MLA (9th ed.)
Harris, Matthew. Sams Teach Yourself Microsoft Excel 2000 Programming in 21 Days. Techmedia, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.