WALKENBACH JOHN. (2017). MICROSOFT EXCEL 2016 BIBLE. WILEY, NEW DELH.
Lua i Stíl Chicago (17ú heag.)WALKENBACH JOHN. MICROSOFT EXCEL 2016 BIBLE. WILEY, NEW DELH, 2017.
Lua MLA (9ú heag.)WALKENBACH JOHN. MICROSOFT EXCEL 2016 BIBLE. WILEY, NEW DELH, 2017.
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