KOGENT LEARNING SOLUTION INC. (2011). EXCEL 2007 IN SIMPLE STEPS. DREAMTECH.
Chicago-čujuhus (17. p.)KOGENT LEARNING SOLUTION INC. EXCEL 2007 IN SIMPLE STEPS. NEW DELHI: DREAMTECH, 2011.
MLA-čujuhus (9. p.)KOGENT LEARNING SOLUTION INC. EXCEL 2007 IN SIMPLE STEPS. DREAMTECH, 2011.
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