O’Leary, T. J. (2004). Microsoft Office Excel 2003. McGraw-Hill.
Trích dẫn kiểu ChicagoO’Leary, Timothy J. Microsoft Office Excel 2003. McGraw-Hill, 2004.
Deismireacht MLAO’Leary, Timothy J. Microsoft Office Excel 2003. McGraw-Hill, 2004.
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