KOGENT LEARNING SOLUTION INC. (2011). EXCEL 2007 IN SIMPLE STEPS. DREAMTECH.
Citazione stile Chigago Style (17a edizione)KOGENT LEARNING SOLUTION INC. EXCEL 2007 IN SIMPLE STEPS. NEW DELHI: DREAMTECH, 2011.
Citatione MLA (9a ed.)KOGENT LEARNING SOLUTION INC. EXCEL 2007 IN SIMPLE STEPS. DREAMTECH, 2011.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.