Walkenbach, J. (2015). Microsoft Excel 2016 Bible. Wiley.
Lua i Stíl Chicago (17ú heag.)Walkenbach, John. Microsoft Excel 2016 Bible. Wiley, 2015.
Lua MLA (9ú heag.)Walkenbach, John. Microsoft Excel 2016 Bible. Wiley, 2015.
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