एपीए उद्धरण

Keller, M. (2015). Obama's time: A history. Oxford University Press.

शिकागो स्टाइल उद्धरण

Keller, Morton. Obama's Time: A History. New York: Oxford University Press, 2015.

एमएलए उद्धरण

Keller, Morton. Obama's Time: A History. Oxford University Press, 2015.