IBM International Business Machines Corporation. (2009). 2009 annual report. IBM.
Citazione stile Chigago Style (17a edizione)IBM International Business Machines Corporation. 2009 Annual Report. Nueva York: IBM, 2009.
Citatione MLA (9a ed.)IBM International Business Machines Corporation. 2009 Annual Report. IBM, 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.