BALAGURUSWAMI E. (1989). LOTUS 1-2-3: A GUIDE AND WORKBOOK. MACMILLAN.
Cita Chicago (17th ed.)BALAGURUSWAMI E. LOTUS 1-2-3: A GUIDE AND WORKBOOK. DELHI: MACMILLAN, 1989.
Cita MLA (9th ed.)BALAGURUSWAMI E. LOTUS 1-2-3: A GUIDE AND WORKBOOK. MACMILLAN, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.