Gaya APA

Hamm, J, M, O, ., M, .. (2011). Making the world work better : The ideas that shaped a century and a company . New Jersey: IBM Press Pearson plc.

Gaya MLA

Hamm, Jeffrey, M., O'Brien, .Kevin, Maney, .Steve. "Making the world work better : The ideas that shaped a century and a company". New Jersey: IBM Press Pearson plc, 2011. Text.