(2007). Step by step 2007 Microsoft Office System. Redmond, WA: Microsoft Press.
Trích dẫn kiểu ChicagoStep By Step 2007 Microsoft Office System. Redmond, WA: Microsoft Press, 2007.
MLA citiranjeStep By Step 2007 Microsoft Office System. Redmond, WA: Microsoft Press, 2007.
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