Stewart, K. 1. (2008). Microsoft Office Excel 2007: A professional approach. Boston: McGraw-Hill.
Trích dẫn kiểu ChicagoStewart, Kathleen 1951-. Microsoft Office Excel 2007: A Professional Approach. Boston: McGraw-Hill, 2008.
Deismireacht MLAStewart, Kathleen 1951-. Microsoft Office Excel 2007: A Professional Approach. Boston: McGraw-Hill, 2008.
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