Barack Obama. (2019). "Change We Can Believe in: Barack Obama's Plan to Renew America's Promise [Paperback] [Jan 01, 2009] Barack Obama" (1.). Canongate Books Ltd.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBarack Obama. "Change We Can Believe in: Barack Obama's Plan to Renew America's Promise [Paperback] [Jan 01, 2009] Barack Obama". 1. Canongate Books Ltd, 2019.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBarack Obama. "Change We Can Believe in: Barack Obama's Plan to Renew America's Promise [Paperback] [Jan 01, 2009] Barack Obama". 1. Canongate Books Ltd, 2019.
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