APA (7th ed.) Zitazioa
Obama, B. (2006). The audacity of hope: Barack Obama. Three Rivers Press.
Chicago Style (17th ed.) Zitazioa
Obama, Barack. The Audacity of Hope: Barack Obama. New York: Three Rivers Press, 2006.
MLA (9th ed.) Zitazioa
Obama, Barack. The Audacity of Hope: Barack Obama. Three Rivers Press, 2006.
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