Obama, B. (2006). The audacity of hope: Thoughts on reclaiming the American dream. Crown Publishers.
Citazione stile Chigago Style (17a edizione)Obama, Barack. The Audacity of Hope: Thoughts on Reclaiming the American Dream. New York: Crown Publishers, 2006.
Citatione MLA (9a ed.)Obama, Barack. The Audacity of Hope: Thoughts on Reclaiming the American Dream. Crown Publishers, 2006.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.