Baker, P. (2017). Obama: The call of history (First edition.). The New York Times : Callaway Arts & Entertainment.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBaker, Peter. Obama: The Call of History. First edition. New York: The New York Times : Callaway Arts & Entertainment, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBaker, Peter. Obama: The Call of History. First edition. The New York Times : Callaway Arts & Entertainment, 2017.
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